Overthinking relationship?

I’ve been with my partner for 5 yrs and I feel like he’s drifting away from me.. like our conversations are dry. And I’m always the one who tells him communication, bc I think that’s very important, he bottles everything up so I don’t know how to have a convo sometimes bc he switches the convo up.

I feel like I might ‘mother’ him bc I have such anxiety wanting to make sure he got to work ok or home and then when I call he doesn’t answer or forgets to message and then gets shitty at me.. I know for sure he ain’t cheating but I just generally care and I don’t know if I’m pushing him away. I feel like am I making him lose feelings? I’ve spoken to him about how I feel and ask him and he reassures me about our relationship but I feel like I might be stuck in my own head? Does anyone else know if they have experienced this??