Snakes normally hide & don't eat while shedding, so best not to offer & waste food. They won't starve, not eating while in shed is NORMAL for wild snakes.
Snakes are normally fed rodents that are as big around as their un-fed mid-body is...and BPs have large heads too, so they do this easily. (there are a few exceptions
for snakes with very narrow heads, but that doesn't apply here)
You must get the humidity UP to at least 60-70% quickly (now) while your snake is "in shed" for best results. By covering most of the ventilated top, that's only
part of it...now you need to use the right substrate that holds moisture in. And -OR- you can provide your snake with a "humid hide" filled with soaked & drained
sphagnum moss, orchid bark, Reptile Prime, or other substrates used & recommended here.
A snake that's trying to grab food often has very poor aim...& they aren't good with vision either. They aim for "warm & wiggling" & we use long feeding tongs
because our hands often make a better target than the food, especially if you haven't heated up the prey enough for them to use their heat sensing pits to find it.
Many here soak prey in very warm water (not hot, don't cook it!) after thawing in cold (best method to reduce spoilage), & may also use a blow-dryer on the head
of the rodent for more heat, then offer immediately. Any snake that misses their rodent & tags you is not considered "aggressive", just mistaken...it's up to you to
prevent silly snake mistakes.