Dealing with loss/grief

Sometime this week I am going to lose my grandpa and I've been going to see him in the hospital everyday. 
I know I shouldn't expect too much but I do of my boyfriend. All he told me was that he was sorry. Like I'm not dismissing that but he hasn't done anything or said anything else or have asked me about it. 
I know everyone deals with this kind of thing differently but if I knew someone really close to him was dying I would be doing extra things to show I was there for him. 
I kinda just feel really sad as it is and I'm not getting any support from him so it just kind of sucks