3 months yesterday

My baby girl is 3 months today. Time is flying by so fast. My ex who is the biological father, hasn’t met her at all. Hasn’t contacted me about her. Wasnt at her birth either. Denied that she was his through my whole pregnancy and stopped talking to me.

My high school friend came in my life again during my pregnancy and together we found out i was having a girl. Made our relationship official on 12.25.20 had my daughter that morning too.

Now my baby girl is 3 months old. He’s the best father figure. Sometimes I wish her biological father was involved as well. Also his siblings don’t know about her arrival at all.

Is it normal for me to want to contact one of his siblings at least and just let one of them know about her? I have two of his siblings numbers but they blocked my old number after my ex and I stopped talking, And I have one of his siblings on TikTok.

Do you think I should send one of his siblings a message?