how big do you feed?

My ball python is under weight and I've been upping the feeder size to get my boy to a healthy weight. What i want to know is how many of you feed by body weight percentage and if so how much (ive heard between 10-20% of the snakes body weight... and would it be too much to feed my 6 month old boy who weighs 93 grams a 27 gram rat pup?

depends on the actual size of the rat. no bigger than the girth of your snake

is it possible to overfeed? i know that if you feed them too much they will become obese, but is it possible to feed too much in one sitting? or will he not strike if he thinks hes had enough the first time?

he would have no problem eating that size of a meal once every 5 days or so

nice thank you for the response