Just a little update since I haven't updated in a while. He is still at 6g but I haven't been able to feed him much more than 1x per week. Now that things have calmed down at work a little, I'm bumping up his feeding to 2x per week. He is so feisty now! You put your hand in his tank and he immediately forms the S and tries to strike you repeatedly. He thinks he's a little rattlesnake. It is so adorable and great to see! Since our pinkie mice are still to large for him (they are easily 2-3x as thick as he is at his widest), he's eating pieces.

Thanks for all the advice everyone! I hope he eventually eats on his own. One of my friends from another store said their store had to put down a python because it had water on the lungs? Not sure what that is, but this python had been with them for a loooong time and had feeding issues. It never ate on its own.