Starting a new chapter in Life

So I(18) met my boyfriend(20) for the first time around this time last year. And I can’t find the words to describe how good he has been to me or how much of a great guy he is. But, he not so long ago started talking to his mom about marrying me, which she ended up telling me, because I talk with her every so often. His family and I are really close, and my family isn’t really like that bcuz my mom was a single mother for all her life until recently 2 years ago. So she is a firm believer of “you don’t need anyone”. But when I met him, like everything in life started to fall into place and she is supportive. In the past, all my relationships were either toxic, they cheated on me, or left me for someone else. But my current boyfriend has taught me what real love is, sounds cliché but literally. My only problem is he is very very impatient and when something happens that he has to wait. It’s literally the biggest problem in the world, and I don’t like it at all, like I’ll literally start having a anxiety attack bcuz I’m stressing out to not make him wait. Also the fact I see he is a little biased when he can do but I can’t do certain things. And yes, I know no relationship is perfect, and that is literally all I can say that makes me rethink our relationship, yet like I always say “our good weighs out the bad”. But he wants to move in together once we have $5,000 saved up. And get married before then. But sometimes I overthink too much and feel like maybe he should lose me to realize that there are things he has to work on. Bcuz I try to tell him these things bother me and he says he is trying to better himself. But idk.... I think I’m just afraid of the real stuff. Help... 🥺