Agreed.I will say that these normally don’t survive, but don’t give up yet. You should definitely wait for an internal pip before starting any kind of assist, but mistakes happen.
I’d probably make just the tiniest hole thru the membrane as close to the tip of the bill, to allow him to rip it open when he is ready. Keep the membrane moist and hope for the best.
Can you post a pic? We might have better suggestions with a visual.