If I wake up with a medium full bladder, morning or middle of the night, sometimes I feel like my dream is still available and paused, and if I go back asleep right away, I can sometimes continue the dream. During these precious moments, while awake, I remember the details of my dream vividly.

On the other hand, if I go pee, then the dream rapidly fades away, like the door is shut. If I do dream again, it will be a completely new dream.

I haven't been good about keeping up my dietary log, but it could be related to certain foods, like if I had too much salt? Idk

Also a full bladder definitely doesn't guarantee dreams. I can have dreamless sleep with full bladder too, which is what makes me think my diet may be related too.