Egg Pipped for Over 24 Hours w/ No Progress & Low Humidity- 17 Others In Incubator for 48 Hours

Hi everyone! I had 12 of 20 eggs hatch on the evening of March 1st (Day 21). Several more were pipped in the morning, and when I came home from work, there were 5 more fluffy chicks in the incubator (Brinsea Octagon 20). The incubator was getting crowded, but I could see 1 of the remaining 3 eggs had pipped externally- so I opted not to open the incubator and left the chicks in. I noticed the humidity at that point had fallen significantly to 53%. I tried adding water through the vent hole to raise humidity, but it didn't last long and fell again. It has now been over 24 hours since I saw the pip, and the majority of chicks hatched over 48 hours ago. There are 17 of them running around in there and it is extremely crowded. Do you think the low humidity shrinkwrapped the chick? Should I go ahead and remove the others or continue waiting? Any advice is appreciated! Thank you!!