Too much modifies a noun, a verb, or an adverb, and much too modifies an adjective or adverb.
"much too [something]" vs "too much [something]"
Too much modifies a noun, a verb, or an adverb, and much too modifies an adjective or adverb.
Too much modifies a noun, a verb, or an adverb, and much too modifies an adjective or adverb.