[summertime42]

This is all great advice. I'd re-iterate on what your savings/PTO is. If you can take a month off, do it. Just do it.

Stay off the drugs for a bit to let your brain return to baseline. Exercise 3 days a week. Eat healthy. Sleep lots. Rest and recover.

[brailsafe]

I would say that, while exercise is important, I wouldn't try and regiment it from the get go. Part of getting healthy mentally is just not guilting yourself about... anything. Forget about the things you have to do every day for a while, and this person might already be exercising anyway. I would recommend to continue that if they're already doing it, and exploring some new physical things if they want, but you kind of just need to give yourself the space to do what you want.