Silver 5 tank main, mostly play Dva (peaked silver 3)

I won't reveal the specific drug in question in case it breaks the rules (check my post history if you want to know what drug it is specifically), but I often will use said hard stimulant drug while playing competitive overwatch because it improves my reaction time, focus, and mechanical skill. I'm a lot more able to pay attention to all the moving parts of the game (where my supports are so I know when to peal, reaction time so I can retreat/engage at the right time, etc).

However said drug is having impacts on my physical health as well as my relationships so I need to develop a healthier relationship with it, and that includes not depending on it to play better. But I just don't have the same level of focus, awareness, and speed sober. How do I develop/practice this besides just "play more"? I'm afraid if I play sober too long I'll rank down. I'm already on a losing streak after coming off my last binge. I feel like a professional athlete admitting to using steroids ffs.

Edit: I'd also like to add I started said drug BEFORE I started overwatch and it was during my last 11-month clean streak off that drug was when I started overwatch. I don't do this drug just for overwatch, but I found it made the game more fun and that I won more while on it.