I feel your pain
I to jumped the gun on my first one and that baby also died an hour after birth
My fault 100 % i have learned from my mistake and found amazing help on here for my other ones that needed assisting and hatched perfect babies that are now laying eggs

Patients and learning to read the duckling is key
Also learning that very few babies actually follow the 24 hour rule
I have had them external pip and zip from 8 -48 hours
I had one that has a small crack and the air cell was huge on that egg. It external pipped and then zipped in 8 hours I wasn’t expecting a baby till the next day yet here it was
But then I realized time is about the air cell. A small air cell you may get a pip and wait 48 hours for a zip
A large air cell you may get a pip then a zip in 8 hours.
The external pip is when they run out of air in the air cell not when they are absorbed
Many will external pip then nothing for 8-12 hours then a second small pip close to the first then nothing for 12-24 hours
When to worry is if the first pip becomes a big hole and baby isn’t going around the egg or if baby zips to the end but not around the egg
Both those mean baby is in the wrong position but is usually absorbed if it’s zipping even if it’s the wrong way. At that point you can make the zip carefully looking for veins. If none pull the cap and let baby push out
If baby is slowly zipping and taking time between that’s okay too let it do it’s thing. When they can zip in the correct place chances are they don’t need help and are resting and absorbing
Hope this helps