I had ordered a very cool smart/wifi temp/humidity before take the python but unfortunately in my country we have some problems with delivery caused by covid... So it is in shipping yet.
I have the snake in my room, I have a very small house so it is the only place in which I can put him but sincerely I have no idea of how much humidity I have in this room... I never had humidity or mold problems in the room, I think it's just the terrarium that isn't good for a snake (I didn't buy it, the old owner gave me with the python). In any case I buyed the materials for build a better terrarium but for now I have to do all with the old.
I have a air conditioner in the room with dehumifier, tell me if I can use it.
It's just an idea, but I leaved in the sun (i put on it an insect screen) the rest of the coconout fiber that I buyed for the terrarium. I think that in a week it should be dry. It is better to change the old humid fiber with this more dry? It's the only solution that I have in mind, for now.
In any case here some terrarium photos.
https://ibb.co/yNWft51
https://ibb.co/Vqx484n