Irian Jaya Python help

[pntball202]

Hi just wondering whether this is normal activity before shedding or if something is wrong with my snake. Iv had him for 2 weeks and he has not shed while with me and I dont know the last he had before then. His skin looks krinkly and he keeps on rubbing his head on everything, his hiding structure, the wood chips, etc. I fed him 2 days ago. He has not looked or acted like this until today. He does have a water bowl that is big enough for him but i have never seen him in it. thanks i took a picture and tried to take a video of what he was doing.