My bf doesn’t know if he wants kids

Hi, My bf and I are 22-23 and been together for a couple of months and in the beginning he wanted kids and I wanted kids but not until we are both older and financially stable. However, the topic was brought up again and he told me he didn’t know, this made me upset because he was always telling me he wanted kids and we decided how many we wanted. But now he saying he’s doesn’t know now because he went over to his aunt house one day and saw how his little cousin acted and that cause him to not knowing if he wants kids now.

I don’t know if I’m making it a big deal but I feel like he put my hopes up and crushed them because he’s telling me now he doesn’t know if he wants kids.

I don’t know if I’m wasting my time because now I feel like he’s going to change his mind every couple of months, however, we are young still and only been dating for a few months. I’m scared since I know deep down at last minute if he change his mind about not wanting kids I would sacrifice not having kids.

Also, does it mean he doesn’t love me enough because he doesn’t want kids?
Am I not good enough for him to be the mother of his kids?
I don’t know I tend to overthink a lot but it just sucks that in the beginning he told me he wanted kids but now doesn’t know.