I did ~5 months, ~12-15 hrs a week and got a 32.
1-2 hours a day during the week & ~6-8 hrs on the weekend
For content review I had a study group MWF for 1.5-2 hrs then self study on alternate days & weekend. Practice exams we started with 1 full section every other day, reviewing answers on alternate days, for ~5 weeks, then FLs on the weekend and reviewing answers through the week for ~5 weeks.