Bethany, maybe ask about stopping techniques in a separate thread in the MTB section so more people will see and answer. I'm strictly a road rider, all I know is that when traction is iffy on two wheels (moto or bici) you need to use more rear brake, just feather the front which is the one that gives you steering and control, and shift your weight backwards to give more traction to the tire you can brake more aggressively with. Hopefully some of the MTBers will have more detailed tips and videos that you can ponder while you're healing and practice when you return.