I was the same when I was a teen. I hung out with a bunch of dudes that did little more than hang out and get high all the time. At the time it never affected me. Now is different. A couple of hits and I’m toast and ready to call it a night.
He can grow them. It can get a little overwhelming when you first start, but once you get it down it becomes routine. I suggest starting slow when taking them for the first time. A shroom trip can be overwhelming if you don’t have the set and setting right.