Any Adice would help!

i’ve been dating a guy for the last four months, i’ve tried to initiate sex on multiple occasions where he’d tell me he just didn’t have the drive right now and i’d let it go. We ended up having sex on my birthday a little over a month ago but after that it went back to him not having the drive for it. i’m starting to overthink that he might not be that into me. (there are other things that put into the overthinking including him not telling his family about me and him meeting my family but not wanting me to meet his) i’ve tried to communicate this all with him and he’ll just brush it off with me being left with no answers. please any advice would help.