The dream of your brother shortly after he died seems pretty straightforward. I don't think you were there to assist him, rather you were there with his (and possibly your) soul group celebrating his return.
Then he wanted you to know he would be away awhile. They say the symbolism used in the world of dreams (the other side of the veil) is sometimes lost in this world. So he literally didn't need to "plug in" but you would get the message with that type of symbolism.
If you hit rock bottom, start picking up rocks.