Time to assist hatching?

Yesterday morning was day 21 for our 6 eggs to be under our buff orpington. I found one of the chicks hatched and two eggs were pipped at 7 am yesterday. One of them hatched some time yesterday evening.


The other one doesn't seem to progress. The pip barely got bigger. We can hear the chick inside. Everywhere I read it says it takes 12-24 hours. It's been 25 hours now. Do I need to help or keep waiting?
Thank you!

I'm not an expert and lots of people may disagree with me but personally I would help a bit as it has been more than 24 hours since the first pip and since the chick is peeping and alive it's probably just stuck. So I had to help with mine who hatched about five weeks ago and I used this link to peel away a bit of the shell as the membrane had turned yellow/brown but I could still hear peeping. Then I put it back and it hatched about four hours later overnight. You just have to be not too slow but careful if you do assist and try not to let it dry out.

https://www.backyardchickens.com/a/step-by-step-guide-to-assisted-hatching

I hope this helps! I found the link really helpful and I think as it has been quite a long time without any progress I would help as the chick might be stuck.
Good luck! I hope it's ok, tell us if anything happens

Thank you, zaapoole! I've studied that helpful post in and out.

I might have been too quick to assist, don't know. After 26 hours after noticing the pipping, my husband carefully peeled some shell. The membranes underneath were completely dry. We moistened them and put it back under mama hen.

2 hours later there was no progress, but the hen had got up, and the egg was pip/zip down. I peeled off a little bit more and noticed the chick had not pipped into the aircell at all. Anyway, if i had an incubator, i would have put the egg in there to keep it moist. Since i didn't, i carefully zipped the egg. All the yolk was absorbed, but there was a tiny bit of umbilical cord on its belly. The chick was extremely weak and sleepy. I was worried that i should not have assisted.

It got better off the course of the day and is happily walking around, eating, drinking, and chirping with the other chicks a day later.

The left chick in the picture is another one hatched today within 4 hours or less since i noticed a tiny crack in the egg. The right one is the one i assisted yesterday.
(I just realized i can't post pictures from a phone, so I'll have to add the picture later)

The left chick in the picture is another one hatched today within 4 hours or less since i noticed a tiny crack in the egg. The right one is the one i assisted yesterday.