ShouldI there's no way that a teaspoon of honey could trigger a 2 lb weight gain. I think it's far more likely that you are experiencing water retention issues. My weight fluctuates over a 4 lb range around my 'actual weight' depending on what I've eaten, hydration status, exercise and time of the month. I find sugar even in small quantities make me extremely thirsty, and wheat causes bloating, both of which would result in a weight gain on the scales even though I won't have gained any fat. If you are prone to fluctuating water levels then using an app that calculates your average weight (such as True Weight mentioned earlier) might be more helpful for you to be able to see steady weight loss.
I don't think you should give yourself a maximum calories. On this way of eating it's likely to do more harm than good to be honest. If you're worried that you could be overeating then I suggest tracking your calorie intake for three days to see whether it's at a sensible level. I know I lost weight eating 1800-2100 calories per day which is above my TDEE. Restricting your calorie intake is going to make it far more difficult to resist carby temptation. Unfortunately the food that is easily available to us is almost exclusively unsuitable for this WOE so you don't want to end up hungry when you're surrounded by carbage. Have you been taking measurements at all? It's quite possible to lose fat without losing weight, but that will usually show in your bust, waist or hips measurement.
If we take your weight loss as 5 lb since the start of January that works out at around half a pound a week. Given your start weight and that you have been reasonably strict, that is a lower rate of weight loss than I would expect to see. If you were one of my Ways of Eating customers I would be asking whether there is something else going on that could be affecting your weight loss, such as:
Hormonal issue such as PCOS
Thyroid issue
Under-reporting your carb intake due to underestimating quantities or thinking you're being stricter than you are
Previous diet history particularly calorie-restricted dieting
Previously successfully losing weight using a low carb diet
Being extremely insulin resistant (is there any history of gestational diabetes or any family history of diabetes?)
Previously eating a less nutritious diet
One factor that can quite insidiously affect weight loss is healing. In some cases the body may react to an abundant-calorie nutritious diet by carrying out healing, for example rebuilding muscles, that has been delayed for diet/health reasons. Some people even find that their weight goes up before weight loss starts in earnest.
You have lost weight, which is good, but not at a rate that you find satisfactory. I think it would be worth you giving the three-day Ubercamp a try. A lot of Bootcampers have used this in the past to kickstart weight loss, get back on track, or lose weight gained during a holiday.
In answer to your last question, this way of eating is not that sensitive. I know you have been eating this way for two months but it is likely that full adaption to eating low carb high fat takes longer than that, probably as much as six month. It depends on how long you have been overweight, whether you are insulin resistant, whether you are leptin resistant and on how metabolically flexible you are. When you have been eating this way long-term, at least six months, you become much less sensitive to eating carbs. If I decide to have a pasta dinner or a sweet dessert then I would not expect to see a blip on the scales the next day any more.
Give the Ubercamp a try then maybe go for Bootcamp during the week and Light at weekends. You know this way of eating works because you have lost weight. If you give up now then you have wasted two months of eating low carb because you will likely put those three pounds back on.
After writing this essay (sorry folks) I've just seen your later post that you want to have a cheat meal once a month. I think that aim is a big mistake to be honest... This is not a diet.
This is not deprivation.
This is healthy food that nourishes your body.
This way of eating is based on the types of foods that our paleolithic ancestors ate to enjoy long healthy lives with little disease and no tooth decay.
Society as a whole has got it completely wrong and is eating foods that make us fat and sick.
Once you have truly adapted to this way of eating your mindset will change and the foods that you currently want to have for cheat meals will no longer appeal. I don't eat pasta, pizza or Pringles, all foods that I used to love (or possibly was just addicted to). It's my birthday in a couple of weeks and I'm not going to have a slice of birthday cake. I will have a cake and blow out the candles so that the carbivores in my family can have a piece of birthday cake. But why would I want to eat it? I don't eat those foods any more. It will taste too sweet. I won't particularly enjoy it. It will make me feel really thirsty afterwards. Then I'll have to get up in the night to pee! Then I'll be disappointed with myself if the scales don't show the number I want to see. After eating this way for more than two years a cheat means something completely different to me. An apple is an unbelievably sweet and crunchy experience. Grapes? Oh my god don't talk to me about grapes, they're like sweeties now. Roast potatoes with my Sunday dinner are an indulgant treat. 70% chocolate is sweet and incredibly moreish (I usually have 85% chocolate.) Don't get me wrong, I love food. I feel a little pang of regret each evening when the eating is over for the day. I'm an adventurous cook and I love cooking and baking for other people. I am not restricted to eating low carb, I am liberated by eating low carb. I will never go back to a standard diet.