Bariatric Surgery?

I had my first consult yesterday. If I gain more than 100g at any stage, I am off the list. At this stage it looks like the sleeve is the option if I end up going through with it. Over the next 18 months, I have a strict diet to stick to. Basically all the foods I enjoy are a no go anymore. But eating them are the reason I am so large (154kgs/340lbs) so I obviously need to change that. The reason for wanting to lose weight is that I have surgeries that I need that are unrelated to my weight but cannot have because my weight is too high. I've been on the waitlist to see the consultant for 18months and although fluctuations have happened, I'm at the same weight as when the referral went through! So that is disappointing but all on me, I'm the one indulging in large Maccas meals, binging on chocolate, etc. FX I actually do better over the next 18months otherwise there won't really be any choice left but to go through with the surgery.