Smikkelpoes

There is no harm in eating excess amounts of protein. Many weightlifters eat up to 3g of protein per lbs of weight.

There is no real one-exercise-replacement for a deadlift, as it also targets your forearms and traps along with the earlier mentioned muscles. The best thing is to just take a rest until your back feels better (I know how hard that is though), alternatively you could try heavy barbell shrugs combined with (bodyweight)…