How long to wait around before he commits?

I met this guy a year and a half ago at work, and we immediately clicked. We dated for 4 months (April-July), but we weren't serious. I knew he wasn't ready to be in a serious relationship because he had told me prior to us ending the dating. He told me we should just go see other people and we would just see each other at work and be civil. He was fired a month after ending it, and he texted me a month after being fired asking if he can take me out to dinner. We casually dated from September to November until he texted me the end of November telling me that he made a mistake saying that we should see other people and he wants to put effort into us. At first I was hesitate on going back to him, but I really did like him. So its been about a month now of us being together. Things are definitely more serious than the first time we use to be. We go out to dinner, he spent a generous amount of money for Christmas which makes me believe he wouldn't do that if he saw me as more than a hookup. He is a full time bartender so I don't get to see him often, at least once a week (maybe twice) which I am okay with because I am a full time student and work part time so I am busy as well. The only issue I have is he still doesn't bring up the commitment aspect to us. He knows that's what I want, but I don't want to bring it up to him and pressure him like I did last time. We have an explosive connection, where I do think there's potential to him being a life time partner. I just need advice on whether I should stick it out, or if it sounds like he's still not ready to commit.
How long to wait around before he commits?
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