He could definetyl stop, but why? He's 2 weeks into it, so the test still needs 2-3 weeks to kick in. By the time he gets back, the test from his first two weeks will still not be felt. It's not ideal to take a break, but it isn't going to mess his cycle up that bad, IMO. Even if he decides to stop the cycle, he would just start his PCT when he gets back. Either way, I think he will be fine.

This is why I only use short esters.