I was in a similar place to you OP. Wanted to reduce intake as my Dad is very ill with type 2 diabetes, and I was probably on course for similar. Never seemed able to keep up any changes, so tried hypnotherapy. Worked from the first session, and was able to be as flexible as I wanted (still allowed desserts when eating out, for example).
Haven’t had any sweets in over a year, so it’s been very effective. I’ve recently decided to have my birthday ‘off’ every year, however, so will be in a haribo-induced coma by 10am next February…