prev post about my dad passing 6weeks before due date

I'm literally in tears right now. His family like step mum and brother and sister are all planning funeral. I have no clue about the songs when where my father is atm in regards to funeral parlour. I don't know who's doing the eulogy. I feel so shit. I'm not kicking off as I'm 34weeks pregnant and this stress is already taking a toll on me and my baby. Any suggestions to try and make them see sense? The funeral is on friday😢