Hey! I'm so sorry to hear about your mum if I was in your situation I'd speak with your sisters and work out a schedule of who sees him and what days so you catch a break. And make him aware of how it'll work and be all upbeat and chirpy with him so he doesn't take offence. He definitely sounds lonely and maybe not ready to be left on his own just yet. What about bereavement groups? I know its hard with covid but any sort of group to help him find his feet again and some normality x