Other side of the family

I’m due to have my son this spring. I have been telling my boyfriend that I want his family that lives in a different state from me to start talking to me and we can open the door of us having some time of a relationship. It’s his mom and his brother and sisters. As it is we been together for 5 years and just met them last summer. In our whole relationship because I live so far they don’t take the time out to get to know me. I figured now that I’m pregnant it will change ugh no. And I have a feeling that once when they see a picture of my son then they going to be different and try and be nice to me. As it is his mom called me 2 months ago and asked me questions that she knew the answers to. In front of his family at the hospital of all places. Like I don’t have a need to lie and boyfriend been coming out here for 5 years now. And I have 2 older kids by someone else who I don’t deal with because of his own choice to walk away and I don’t deal with his family either because they are too messy for me. Would y’all feel some type of way if they start being all nice after the baby was born? Because I feel that’s fake why not keep the same energy they had my whole pregnancy.