Schedules are really not important. Just about every snake in captivity gets more than it should or would get in it's natural setting. That coupled with fattier food sources and less exercise, makes a SET schedule something that can add to the problem.
There is NO harm in letting the snake shed and then feeding a day or two after.
Our royal has eaten once in the last year and you could never tell she has gone that long.
WAIT, is what I would say.
Royal pythons are the longest lived snake for a reason. They will regulate their own food intake, and frustrate their owners, but in reality they are stretching out their lives by eating less.
Now, there are certain situations where long periods without food is a concern, but a shed is not one of them.
Skip it, let the snake shed and probably eliminate more waste, and then feed.