I wouldn't feed any closer than every 5-7 days, they need time to digest, otherwise you risk seeing the meal again, in the form of a regurgitation.
And did you miss this? > > > it's the 5th "sticky" from the top, under "BP husbandry":
By this chart, you'd want to be feeding him either a rat pup (20-29 grams) or an adult mouse (18-32 grams).
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