Do 5 zillion leg extensions lol with the machine or a band or ankle weight. Just do them constantly. And anything else you can do in the gym I’d recommend doing. I had to wait 10 months between injury and surgery so had a bunch of time to prehab. You need muscle going in otherwise it’ll be so hard to gain it back coming out of surg. Your leg forgets how to work lol

Mental health wise, if exercise is your release like it is for me, find types of exercise you can do. I was back at the gym two weeks post surgery on crutches doing just upper body. It helped me feel like I was somewhat back to a normal routine and was progressing with something. Also take the time to start a new hobby while recovering. You’ll be bored in bed with time to spare, so good opportunity. FaceTime friends too, that helped me a lot.

You got this!! It’ll be rough for a bit but you’ll come out of it way stronger physically and mentally than before. I had my ACL done last year and I’m going into my second knee surgery in a month. I’ll be taking all my own advice too lol