If you feed live prey I strongly suggest to wait out the shed process they don't see that well and if your snake miss's the head the prey item can cause serious damage to your snake. the snake won't be hurt by missing a feed date
If you feed frozen thawed than if you want by all means offer it some food
one of my BP's eats while in shed but my other will have nothing to do with food untill its done
it really depends on the snake