This is the advice I was given and follow.
After eating don't mess with them for 48 hrs -always-
Don't mess with them in shed -always-
New snakes first month.
Week 1: don't handle, only enter their enclosure to clean and change water.
Weeks 2-4: 15 -30 min once a day, don't take out more then once a day, it gives them time to de stress between.