Alright, so my ball python hasn't shed since the beginning of September, and he just got his pink belly a few days ago, along with the fading skin color. Typically when he shed, he didn't act unusual, as he would maintain a set amount of activity. However, ever since he started shedding, he's done nothing but spend time in his hides. He's also lost some of his grip when I hold him.

For the record, my pastel is 4 and a half months old, and around 26 inches long. I also moved him over to his new 30 gallon setup a couple weeks ago. The only new things I've done with his enclosure are add a few decorations and switch from aspen to paper towels. Husbandry is perfect, two hides - a cool end of 78-80, and a hotspot of 88-90. Ambient is 85. Humidity is around 50 on the average day, but I've been misting and such since shed started to keep it around 60-70.

Is this common behavior during shed that I should expect more often?