Plagued by foot injuries

So I am just starting out with muay thai and I, during padwork, frequently kick elbows which has led to multiple injuries. Its gotten to the point where I am pulling my kicks out of fear. My coach says the pad holder should be tucking their elbows when receiving kicks and I should be striking the nearest pad with my shin and the farthest pad with my foot? Would wearing something like this be beneficial for now just so I don't mess up my foot? Once I have a good idea of range, I could stop wearing it.