Let's take for granted first that you're convinced of your own consciousness. You're more confident in it you say, though not thoroughly convinced, so let's start there. So in light of the fact that you are not simply a being inside the universe, but an integral, inseparable part of it, is you observing the universe not the universe observing itself? This might not be "the entire universe in totality is a big, pondering mind" but it at least means, again given that you are conscious, that the universe is at least as conscious and aware as you are.

If you're not conscious then there's no starting point from which to even begin this line of inquiry.