bad relationsip w/ dad

hello! i didn’t really know where to post this so i guessed this would be the best spot for it. my parents got divorced when i was very young so for all i could remember we were never together. up until i was about 9/10 years old i used to go sleep at my dad’s house every other weekend until he had to move to california for work (i live in NY). when we were together we had a very close bond and we were able to laugh with each other about everything. recently though, i’ve noticed how over the years we’ve lost touch. he’s stopped calling me weekly and we only ever text/call for holidays. whenever we visit each other the conversations are very dry and cold. my dad is not a very outgoing person and is hard to get close with. the only person i talk to frequently from my dad’s family is his step-mother (my un-biological grandmother) due to the fact that most of my dad’s side doesn’t like me because of my mother. does anyone have any recommendations on how i can aid this relationship? it would be greatly appreciated💓