It doesn't have to be you, it could be anyone, even a non-relative.
I think you also need to spend some time around your grounding person, if you have one or find one. This will be heavy on all of you.
A lifetime ago, when the love of my life was still alive, my life felt lighter. It is amazing what a person's presence can accomplish, even in silence, even electronically. That feeling of being grounded and some level of clarity of thought, I wish that for you and your brother.