I bet you packed way too much food.

Ignore all the advice to carry 4000 Cal a day. I only take 1500 Cal per day and never get faint or crash. You can burn some fat. You can make up for whatever you burn before and after the hike.

Skip the stove. It does not weigh much. Just need some human fuel, not a hot gourmet meal.

I've done 5 Whitney summits carrying only 2 liters water from last water at roughly 12,000 ft. Reload on the way back down.

Just my two cents.