It's up to you, and some will disagree with me, but I suggest you open the incubator briefly and adjust a few things. Here's what I'm suggesting:
1. Prep warm water, and wet several rags or sponges with it. Set them in a dish by the incubator. Keep them warm.
2. Pour some of the warm water into a clean spray bottle. Make sure both the water and the bottle are very, very clean.
3. Quickly, before the water cools, open the incubator and place the rags & sponges under the vent holes where you can wet them again via dropper as they dry out.
4. Quickly spritz the pipped egg with the warm water in the bottle.
5. Quickly close the incubator.
6. Leave it shut for the duration of the hatch or until you have babies that need taking out (I do this every 12 hours or so during a hatch, removing any babies that are dry and placing them in the brooder).
This will get the humidity up for the remaining eggs, and re-moisten any dried out membranes in the currently pipped egg. I think the benefits will outweigh the risks. The sooner the better--once they start externally pipping, they will suffer from the lower humidity.
Good luck!