So im really excited for my son to get his helmet on tomorrow and start the reshaping. But im also really nervous, like…

So im really excited for my son to get his helmet on tomorrow and start the reshaping. But im also really nervous, like what if it irritates and bothers him so much he's just constantly crabby? He also has to sleep in it so im worried he will sleep like crap after he just started sleeping 8:30pm to 6ish am! I shouldn't be so nervous, I feel selfish