Parent advice?

Please be kind. My son is over 1 year old. His biological father has never met him. Or helped with anything. He doesn't ask how my son is. I have to get ahold of him first... we hasn't spoken in months.. not once has he made sure he was okay or anything. All he cared about was child support. I also got mail stating that I have to file for child support. During this time I was moving and didn't receive my mail for a month. Now they say I'm not cooperating. I don't know what to do. I don't want to lose his insurance because of it but I don't want his father thinking I'm being dirty. Its confusing... I just need advice because I am so overwhelmed right now. Will he be able to take him? I don't smoke cigarettes or anything. I'm just scared...I don't know..

Thank you in advance 💚