Baby Daddy Drama-Single Mamas Please!

Is it wrong of me to not inform my baby's father about anything if he's not putting in the effort to ask about how things are going, if there's appointments he's missed, etc? We separated about 2 weeks before I found out I was pregnant and ever since then I have been running things on my own. I even found out the gender last week without him there. He's very malicious and rude and has threatened taking my son away from me. I'm just very discouraged about this right now 😪