His hopelessness and just constant ..

Reading on his phone is destroying our marriage. I feel like his depression and just physically being there but not mentally being there is a sucky situation. The kids see there dad but he’s on his phone reading literally his body is in the house but he isn’t present. I have been with my husband since 2012 and married since 2014. I don’t know how much longer I can feel lonely and have these feelings of being present to his family and days he’s not. He is seeing a therapist just started but, I want a dad who’s present in the kids lives not just here and there when he’s out of his funk. Any tips I miss the man who I fell in love with. Someone with advice please is it time to move on?