Asking for a friend here, about a year ago he purchased a 2 year old Male Coastal Carpet Python, strong eater, active, sheds great, no signs of any issues. However as of June 1st his snake has gone into almost like a sleep mode, sleeps in his hide all day, then comes out, moves the hide off the heat pad and lays on the heat pad, then sometime in the night must go back in the hide and pushes it back over the heat pad.
No changes to the environment, so can't be that. All his temps and humidity are good. Only thing I could think of is, it is now Winter in Australia, but how would this snake know lol.

I've never had a snake go into Brumation on me so can't really help him out, some online searching, I've found that some owners will drop all temps to room temperature and turn off all lights? As of right now he's left everything the same.

Any suggestions, opinions or advice on what to do if your snake is doing this? Should he be adjusting his settings or leave everything alone?
Also may be you can tell me how a snake would know how to go into Brumation?

Thanks