I had an issue with this a couple of weeks ago. She went into shed and during this had a huge poo.
That's a good point too. Your snake may be storing energy for an upcoming shed. Often times they won't poop for a little while before a shed, and then...surprise!!!
My BP is 8 months old, and had a bowel movement on December 17th.... then didnt have another one until January 28th, after she shed. She had a sausage butt for about a month but apparently she was happy to hold onto it lol.
0.1 Red Axanthic P. regius | Mazikeen
0.1E. climacophora | Lan Fan