My advice is to leave the animal alone until it's eaten for you twice, consecutively, when food was offered. That indicates it has settled into its new home and feels secure, so you can start short, gentle handling sessions to tame it. If it goes off food, eliminate handling, and start again at a reduced rate, once it's feeding again.

Chronic stress makes reptiles susceptible to infections, reduces their appetite, and is just generally very bad for their health. So, when you move an animal, it's under stress, and the stress lasts until it's acclimated to its new environment. Adding the stress of handling on top of that is not a good idea, hence the advice.