Candidates with ADHD, how to deal with the crash outs?

I study in phases. There are times when even 24 hours feel too little, followed by weeks where I crash and don’t even touch a book. I'm currently going through one of those phases, haven’t touched a single book in a month (don’t panic, lol, I’m not preparing for UPSC). Is it even possible to prepare consistently with ADHD? How do you avoid crashing and burning out?

For context, I’ve been a part of this government exam cycle for five years now, and needless to say, I’m quite exhausted. These five years have been a continuous loop of focused study followed by burnout so intense that I end up drowning in guilt, only to hyperfocus again.