Perfect timing.....? UPDATED

My husband is in the military, we are both turning 21 this year. I know he says he doesn’t want to start trying for a baby just yet, I was wondering when do you think would be a good time to bring it up to him again. I don’t want to ask too soon and him feel pressured into it because he’ll do anything to make me happy. But I also don’t want to wait until I’m 25 either, not that there is anything wrong with that it’s just not how I see my life personally. Thank you ladies in advance!

UPDATE:

He said we can start trying in about two years. After I’m finished with both degrees I’m working on and he gets out of the Army(unless he decides to stay in) he doesn’t want to possibly get deployed while I’m pregnant and not be there. Thank you for the help and kind words.