“Exactly and in the end I think there is something ridiculous about an entirely new universe being created every single time anything happens.”
What mandates that the split remains permanent?
Bingo! We have a winner!
Imagine a rope made up many, many strands. While they are separate strands, together they make up a rope.
Consider the major reality being the rope, with each strand being a kind of minor reality. In this model the strands branch off and split, but ultimately rejoin, all the while being a part of the larger rope, or all of reality.