I'm not sure whether you can do LLL until your BMI is 30 or under. I've come back after putting on 2 stone and my BMI was just over 30 so my LLC suggested I do 4 weeks on LLT and then move onto LLL as that was when a group was open again.My BMI is now below 30 and I'm 2 1/2 weeks in and have lost 9lbs in my first 2 weeks. Maybe you could see if you could do that as groups reopen every 4 weeks and that might give you boost and incentive to give it a go again!
Good luck whatever you decide!