Yes, once the daffodils come out it's haYfever time! (Until the trees lose their leaves again...)
So the one I use (coughtescoowncough) contains loratadine which can (rarely) cause you to eat more and (separately?) gain weight.
I might just stick to the nasal spray for now though as recommended on the site you linked. Thanks for that!
Umm, I'm not sure I can remember exactly what I had, so I'd have to go back and reread the thread!
Typically though.
B; few nuts or GF sausage or left overs,buttery egg, BPC with butter and cocnut oil and splash of cream 
(I'll be honest though, I don't often need anything really,I prefer to have an early lunch and tea is about 5 in our house if I'm hungry in the evening, which isn't often, I'll eat what I'd have at breakfast, minus the BPC!)
D; chicken, green salad leaves, mayo (helmans, which isn't great, but I only have a bit to be safe), occasionally bacon, eggs, mushroom type of meal.
GF sausage and spinach/salad leaves or pork belly. That sort of thing.
T; as above really, but also mince with leek, spinach,courgette, mushroom and a bit if tomato. Pork belly/steak and some mashed swede as well. Fish too! Chicken fried/roasted in butter and cocnut oil with broccoli and /or cauliflower.
I'm sure this sounds rubbish and I tend to either have the same thing twice a day or for tea and then either breakfast or lunch.
Oh, and I'm not good at cooking so...yeah.
I really like quite plain food though, so I don't need to get all fancy IySWIM? 
I'm drinking 3 litres now plus a buttermint tea at bedtime.
Maybe I just have to keep on and wait for the whoosh fairy.
Thank you for this, especially as you're not well. 