I'm not on hormones nor had RT. My minimal Intermittent Fasting is not to eat after 7pm until breakfast which is usually 8pm or later. It's a very mild version that I can easily live with. No use doing things you can't keep up.
If you're trying to lose weight try cutting out saturated fat. It's amazing how much there is in many foods especially ready made food. 20grammes a day should be the max, and down to 12g if you can.
Also banning cakes and biscuits from the house. I lost 7kg during lock down after a high cholesterol reading just before. This is also something I can easily live with.