One more go at weight loss before I bow down and get VSG

Do any of y’all have weight loss tips? I am 23

5’ 5’ and 270 pounds. I qualify for the bariatric sleeve but I really want to give it one more go with just eating decent and exercise because of the risks. I’m not really sure how to go about it because every thing I’ve tried before failed. I feel horrible just living, all I want to do is sleep and that’s impossible because I have a very demanding 1 year old. I have to figure out a schedule that will work around him. Please if you have any suggestions I would greatly appreciated them. Please no hate. TIA