It's not dumb, most people trial it as part of their tier 3 but I would possibly wait until you get the all clear to try it from your team (just because I don't know your medical history and I'm don't have a PhD), this said, it's your call, just be responsible and if you do decide to trial it, make sure you a) keep hydrated, b) take multivitamins and c) make sure you let your team know you've had a go.My husband's working past midnight for the past couple of weeks so I have a lot of spare time on my hands and this is all I seem to be thinking about! My thought today is considering trying the liver shrinking diet for a week or so - but is that a dumb thing to do before I've even had my first appointment?!
The waiting is definitely the hardest part of this journey as after you've finally bit he bullet to make the change, it's all you think about. Just know that the time flies by and before you know it, you'll be anxious about your imminent surgery. If you have free time I would use it for research. I highly recommend the book Living with Bariatric Surgery by Denise Ratcliffe. I read it pre op and my trust have even started recommending it to people considering surgery x