Hey Emma. I am still studying for the LSAT and not close to an expert by any means, but I would suggest working in smaller increments. Do 5-10 question drills and take breaks frequently. Try to work in small blocks rather than taking long section after long section (it can get exhausting). I would spend time watching videos and answer analysis when you feel like you can't focus on solving regular questions. Also, break the practice tests into section -> break -> section -> break.... it isn't the real LSAT; it is just practice and I promise no burnout + consistent practice (no matter how many hours) is better than taking PT after PT and burning out.