Twice I have had a very similar dream. I dreamt that I was moving out of my current place, which I have no intemntion of, and moving into a new place with my mom. My mom passed away tho in 1995. Until we were able to move in , we were sleeping on an old dirty matress outside of the house I grew up in. When I woke up there were mice all around the matress. I was looking forward to the move and there was nothing in the dream showing that my mother had died.
On a side note, we had no mice problems in the house I grew up in and I don't even live in the same state.
My mind is racing on what this can mean, any guidance would be greatly appreciated

"Weird" dreams are often symbolic. Have you looked up the meaning of the possible symbols within it and considered how their meaning might relate to your waking life at the time you had the dream? Here are links to their definitions:

deceased

home

rat (variation of mouse)

small animals

Given the setting of your dream and the presence of your deceased mother, the dream would seem to be about your family life. Without knowing what was happening in your life at the time of the dream which generated your dream, it's hard to give you an exact interpretation. If you wouldn't mind sharing that, I'd be happy to give you my best thinking about it.