[dang]

Since that seems to be resonating for you, I think you owe it to yourself to at least test the hypothesis before deciding not to do your original plan. I'm just repeating here what quantumite already said, but I wanted to comment from personal experience. I dropped out of mathematics when, around the time my first kid was born, I suddenly started to feel like my brain was paralyzed and unable to think mathematically anymore. I remember blankly staring at textbook pages for hours, unable to do any exercises at all. I didn't talk to anyone about it at the time, just concluded that I had lost all my ability, and suffered in silence.

Only years later did it occur to me that it might have simply been burnout, and with the right kind of coaching I might have been able to continue. So that's the other bit I'd suggest, besides just taking a rest: find some people who can advise you about this and who you have a good connection with personally. Don't just go through it on your own. Something that may not be obvious to you at all might be the first thing to occur to a more experienced person with your best interests at heart, and it might turn out to be a big deal. You don't need to deprive yourself of help.