Ball python eggs, opening early?

I have a clutch of spider ball python eggs that at 60 days I slit one open a little to make sure everything was ok since I had lost two eggs already with mold. This is my first clutch and I know I made some mistakes with my incubation but have learned from them. My question now is it has been 66 days and the lil guy poked his head out a few days ago but I looked in his egg and it seems the yoke may have dried up too fast or wrong cause he seems stuck in there. So is there anything I can do to fix my mistake and help him out? Like misting him or raising humidity? Thank you for any help I appreciate it and would love for this lil guy to make it. Just to let you know the rest hatch fine!

I would boil some water or used distilled and soak him and the egg remnants in it (tepid temperature) to try to soften things up(this should only take minutes under your supervision only). If your at day 66 and incubating im assuming atleast or around a moderate ~85 degrees most of the yolk should be absorbed and he may just be absorbing the last of the umbilicus. at that point you can keep him on papertowel until it drys up and falls off. Not knowing all the details this is what I advise but get some other opinions.

AT 66 days he needs to come out. Especially if the yolk is dried up. If it is a small baby or he is thin you will want to get him eating right away. Do like the first person said and raise the humidity to 100%. Was the incubation temp too low?

A trick for the next time you have eggs. If fertile eggs get mold spots on them they can be saved very easily. Get a small bottle of athletes foot powder and apply a small amount of this powder to each mold spot with a Q-tip. Gets rid of the mold and saves the egg.

If a cut egg is drying out, that suggests that the humidity isn't really high enough in the incubator. As well, if I cut eggs, I generally will pour a little distilled water into them each day in order to make sure that the membranes inside stay moist until the baby is ready to emerge.