I was going to suggest it but you already know it.
I’m in the exact same spot as you and I I have yet to find solutions.
Anyway the first step you must take is to seek for professional help.
My average day was a 4/10 before, now it's a 7/10. It's been game changing.
When medicated I just find I am myself, but doing things. I couldn't tell you if it's 40% or what, just that I imagine I am like most people now. Doing, slowly moving towards my goals, without being a soulless hyperproductive machine. There's times I have to force myself to do something boring, like everybody else does, but I can still take them to completion. I think this is a healthy balance, yet much better than my previous state of complete and total inertia and infinite self-loathing.