I wouldnt worry unless you see something like serious backup. Sausage butt if fine and usually means a poop is coming very soon lol. Just be sure to keep him well hydrated as low hydration combined with too much or too big of food can cause back up issues or prolapse. Eating big meals takes a LOT of liquid to digest. Combine that with low humidity and low water intake and you got a disaster waiting to happen.
It's like people say you need 70-80% humidity for snakes to shed. i call BS. All my snakes including my GTP shed one piece just fine at 65-70% humidity. I dont raise it during a shed or anything. Just keep it constant 65-70%, sometimes dropping as low as 60% in the winter but i prefer to not keep it that low.
And stick to smaller meals. There is no reason to see how much your snake ca eat. It isnt going to starve and us as keepers generally overfeed as it is. No need to compound it more by giving huge meals. Even my retic gets average or smaller meals. He could easily power down a 4XL guinea pig but i give him jumbo rats and XL guinea pigs.