This stuff works for keeping the tank at the correct temp even in a cold house.
T-stat https://www.bigappleherp.com/collect...hip-technology
a under heat mat https://www.bigappleherp.com/collect...tile-heat-mats

Or a ceramic heater (make sure the snake can't touch it).
https://www.bigappleherp.com/collect...-heat-emitters

Good luck with the baby!