Dad turned 90 this past September & going down fast..he just got in hospice. He can't remember anything. How do I prepare myself?

Is your father in a nursing facility or a hospice home? I know that most hospice homes are allowing 2 visitors per patient per day. And it has to be the same 2 people per day, so if he's not in a hospice facility, you might ask for him to be transferred to one, so you can spend some time with him.

Also please know that hearing is the last sense to go, so if you only get to talk to him on the phone, he will hear you.

I am truly sorry that you are having to go through this, but remember just how blessed you are to have a "daddy" that has meant so much to you. You are very fortunate. God bless you.

I hope you can talk to your dad so he can hear your voice. At that age, my mother wasn't able to talk, she stopped talking a few years prior.

Maybe have a nurse hold up the speaker phone and you can call him and just say I love you dad. maybe knowing he is hearing your voice will help.
Can you set up daily appointments for the nurse to call you so you can say hello to your dad, and tell him some memories of the 2 of you together? Get them written down, so the nurse knows you will only be 2 minutes on the phone.
Hey dad, remember that time when:
you took me to get ice cream after school, and I dropped the cone on the ground? or whatever your good memories are. did he teach you how to drive? anything funny happen then? I love you dad, I will see you soon. :)
be happy sounding if you are allowed these appointments. do not be sad. Make his day happy. Play a song that you know he loved listening to.
Prayers are with you. This is hard, but make it happy if you can talk with him.
He wants to visualize you with a smile, laughter.

I am so sorry. Stories like this really makes me sad.

I wish you could see your dad. My dad died in 2002 and I can’t imagine not being able to see him.

I was fortunate because there was no Covid, plus the nursing staff and my dad’s doctor never enforced visiting hours. I could see him whenever I wanted to.

I so wish that there was no Covid-19 and you could be with your dad as much as you wanted to.

I’m very sorry you’re going through this. I lost my dad of the same age this past summer. I had much different circumstances than you do, it’s much more complex with dementia and visiting restrictions. There aren’t any good admonitions for you, just know your dad will be at peace, focus on the good memories and what he’s brought to your life, and know you’ll get through. I’m still tearful many times, but am learning to think with smiles more than tears and know my dad is where he so wanted to be and not miserable any longer. I wish you peace