Couple what you said with what I believe is the fact, I don’t think he really knew how big the village was.
When his scouts first showed him the village he kept telling them “I don’t see it.”
I believe God, for whatever reason, blinded him to the reality of what he faced.
Stop believing in the MYTHS !
The village wasn’t that large, there were only 1’500 warriors in a 1 mile village.
The “enormous village” with “thousands of warriors” is pure lie, every Little Big Horn historians knows it.
That was key. He didn’t realize it was a war village, nor the size of it. He needed to believe his intelligence and get more before acting.