Back Squat 5x3 and Box Squat 5x5 Workout

Back Squat 5x3
75(3)-85(3)-95(3)-105(3)-110(3)
previously maxed out with 2 reps at 105

Box Squat 5x5
75(2)/65(3)-65(5)-65(5)-65(5)-65(5)
Tried 75# but couldn't stand up out of the bottom. Dropped back to 65#.