Need advice

What's going on everyone. I'm new to this site. I'm 28 yrs old. I just had my 4 quad tendon revision repair. Needless to say. I haven't been able to train workout jog or anything in 4 years. I'm hoping this is going to be the last time. Anyways. I have gained about 70 lbs. I'm 5'10" weight 290. I'm athletic build I'm usually comfortable and cut at 205-215. I haven't had good eating or sleeping habits. I want to know if there is anything I can take to help cut the fat, boost my metabolism, and possibly help heal me while I'm laid up for the next 4-8 months ago. I want to get back into shape. But not sure if there is anything I can take while not being able to even walk right now. I am starting a strict diet. But need advice as to if I can take anything. Thanks for any and all advice

Need advice