What if our life is a dream for another version of us

What if our life is a dream for another version.

When I sleep at night, I very often end up in parallel universes. Just living an another life with very random normal scenarios. Yesterday j had one where I worked In a kindergarten( I do not) and everything felt just as real as always, sounds, smells, taste, everything.. So I have been thinking for a long time actually what if when we are "awake" it's actually a "dream" for another version of us while they are sleeping? Just as while we are sleeping, end up in other versions. I hope it makes sense. But I often think this.

Edit: This night I also had one, where I saw something "I" never saw before. But the person who was with me inside this dream/ life found it odd and laughed, that I reacted that way and said something like you have seen this so many times. Which I definitely not had but maybe another version of me did??