If I may offer some friendly advise
1) Feed him inside his viv. If you're really against it (not sure why you would be) then - once he's coiled around the rat, quickly put him in a separate tub to finish. Moving prior to feeding can often times cause your BP to refuse food, especially as hatchlings. BPs are much pickier than corns.
2) I'd leave him alone until he's done shedding, and done eating.
Drew is very available though, if you have questions about feeding etc I'd contact him. If you dont have his phone # or email he replies to messages on his FB very quickly.