I've gotten to the point where I'm just drilling and taking PrepTests now. Ambitiously I've tried to do 1 per day, but I've quickly realized this has diminishing returns. After the 3rd or 4th consecutive day of taking PrepTests, my scores begin to drop significantly (like a difference of minus 4-5 questions on proceeding PrepTests).
I can tell when my mind is burnt out too - I may have to read a stimulus multiple times and it often feels like I'm just intuitively picking answers instead of reasoning through them. I'll often miss questions because of a silly reading error. After a day or two of rest, my score is back up to where it was initially.
My question is, does this phenomena ever end? Have any of you been able to take a PrepTest every day with no diminishing returns? And if so, what strategies did you employ?