Don't give up hope. My Monty was missing for two months. We looked EVERWHERE. While I know snakes can go quite a while without food, he was only about 160g so he didn't have much reserves to go on.

Two days after taking in a re-home BP, Monty appeared. Literally just appeared. Walked into the front room and he was sitting smack dab in the middle of the floor. I actually thought it was a rubber snake at first!

He was so so skinny and covered in dust bunnies but he was fine. He clearly hadn't found anything to eat on his own. We had kept a bowl of water down on the floor the whole time, that may have been what kept him alive and what kept him from wandering too far away.