@Richtea67 sorry to hear you feel demoralised. Keeping the weight off without WLI is tough.
I've been on a tapering programme and here's a few things that have helped maintain while reducing the MJ and having less suppression. Some of these are Glucose Goddess hacks, her book/channel might be helpful.
Smoothies for breakfast are a big no if you struggle with blood sugar regulation. They will give you a big spike in blood sugar and then a drop, so you're likely to eat more later. Go for something with protein, and preferably savoury or at least low in sugar.
1tsp Apple cider vinegar in warm water around 30 mins before a meal.
Berberine and chromium supplements.
If you eat fruit, add some protein and fat (e.g. a piece of cheese or some nut butter with an apple).
Eat some salad or vegetables before your main meal. Helps fill you up and you'll be less likely to overeat on the starchy stuff, which is what is more likely to cause problems if like me you were prediabetic before MJ or had subclinical blood sugar control issues.
Avoid snacking between meals unless you need extra fuel for exercising.
Minimise ultra processed foods.
Idk if any of this will be useful - take what is and leave what isn't, and good luck with it, I hope you are able to find a way.