Since you are asking, I will share my opinion. I am 7 days behind you. Since this is going to be my first clutch and I have absolutely no experience to fall back on, I am going to allow nature to do what it is supposed to do. If that doesn't turn out to be the results that I hope for, then I will research to see if I can identify the problem, and do my best to prevent it the next time around.
If were to cut, I won't know if it was the incubation process, the parents, or me making a mistake. Why add variables?
Since you have waited 57 days already, a few more won't kill you. Just remember when you are posting pictures of them pipping, I will need you to talk me off the ledge, as I will have 7 more days to go.
Hang in there