Is this normal for blowjob

Okay I’ve been dating my boyfriend for 2 years, and we are both each other’s first everything, last week he asked me to try giving him a blowjob, so I did and it was fine and he claimed to be enjoying it, but I couldn’t get him to finish and he had to do it himself and came in my mouth, I was proud of myself for taking the cum shot easily but I’ve been stressing that I couldn’t make him finish myself, is this normal. He keeps trying to tell me it’s just because there’s a method you can do, which is code for trying to make me feel better. Can someone tell me if this is fine??