The fact that he is moving and strong is a good sign that you do not need to help. If however, you don’t see any progress in a few hours and can’t stand it, you can help a little. I was taught to only chip shell, not membrane, in a ring shape around the egg. This mimics the normal zip. If you see blood vessels in the membrane or blood stop immediately, he isn’t ready yet. You may only need to do a little, not the whole band. Then put him back. You still want your little one to finish hatching himself.