Coping with someone passing

I don’t know what stage of grief I’m in. It’s like I’ve been functioning like normal and keeping myself busy. When I sit down I just click that they’re gone. I cry about it. I repeat. Go on with my things. It’s hard to face that the reality they’re gone is here. I can’t call them. I can’t see them. I can’t hear their voice. I can’t hear them tell me encouraging words ever again. I can’t ask them for advice. It feels like a dream.