Not sure if you are saying the snake was abondoned without water as well for 6 months?

What were the circumstances? Was the snake in an empty apartment, was it being cared by people - just not being fed?

I cannot imagine that it would be alive if it went 6 months without water to be honest. Six months without food... sucks, but it can bounce back from that. Chances are if the husbandry was off that much, it would not have eaten regardless.

But six months without heat... you need to get that snake to a vet for a check up. Not maybe... but definitely.

Bruce