Studied on and off 1.5 years and ended up getting a 176 (after a 166/169).

I took all exams except PT 84. I took the exams first as full length and then I retook them as practice sections. I’d recommend leaving fresh ones available until you know this is your final LSAT.

Also, if you run out of exams, check LSAT India tests. I couldn’t find a way to convert to 180 scale but they kept me fresh.

EDIT: 156 diagnostic