Feeling everything in the universe at once is not possible for humans or any other known entities. The universe is vast and constantly changing, containing an unimaginable number of objects, events, and interactions happening simultaneously.
As humans, our ability to perceive and experience the world is limited by our sensory organs and cognitive capacities. We can only process a fraction of the information present in the universe, and even then, our focus is generally confined to the immediate surroundings and our individual experiences.
Feeling everything in the universe at once would require an entity with omniscience and omnipresence, possessing unlimited awareness and presence throughout all of space and time. As far as our current understanding of reality goes, such an entity does not exist.
While humans can have profound moments of interconnectedness with nature and the universe, such experiences are typically limited to personal insights and emotions rather than encompassing a comprehensive awareness of everything in the universe.