Relationship after baby

Ugh I had my son 7 months ago and nothing in my relationship is the same anymore. I catch myself looking at old videos and pictures and just feeling like “I miss this and that person”. So much has changed between us. I just feel like he doesn’t value our relationship and doesn’t really make me a priority. Things have gotten so comfortable. He could be so mean to me at times and just I could go on and on. I let him know that if I don’t start noticing a change between us then I cannot stay anymore it’s just making me feel so down and out. Anyone have any advice?