my brother just died and i feel guilty

normally i wouldn’t turn to reddit for advice, but there’s not many people who really understand what it feels like besides my family. my brother died of leukemia last night and i feel so lethargic and exhausted. i feel like i never wanna speak to anyone again, and at the same time, i want the whole world to know. i feel like the only thing that’s making me feel better is talking to all my friends, but then i feel so guilty. none of my family is talking to their friends, so why am i so okay talking to mine? i feel like i don’t care about him as much because i’m not spending 100% of my time thinking about him. but i miss him so much. does anyone have advice on how to get over this guilty feeling?