If you mean the word 'little' as an adverb, the comparative is 'less' and the superlative is 'least'.
If you mean the word 'little' as an abstract adjective, the comparative is 'less' or 'lesser' and the superlative is 'least'.
However, if you mean 'little' as an adjective referring to the physical size of something, you would not use any of those forms. 'Littler' and 'littlest' are rarely encountered, although not technically incorrect. 'More little' and 'most little' are similarly unidiomatic. The usual practice is to choose another adjective, for example 'You see that little black kitten there, and the ginger one that's even smaller ...'
comparative forms -- littler or less or lesser. Superlative forms -- littlest or least.
"Less" is a comparative of the word little. Its superlative form is least.
the comparative and superlative forms of the word near are nearer(in comparative form) and nearest(in superlative form).
less, least
What's the comparative and superlative of the word "exact"
Comparative: shallower Superlative: shallowest
Comparative sooner Superlative soonest
comparative is more and superlative is most.
The word "I'll" does not have comparative and superlative forms, because it is not an adjective. "I'll" is a contraction for "I will". The word "ill", however, is an adjective, and the comparative and superlative forms are "more ill" and "most ill".
Larger and largest are the comparative and superlative forms of large.
The comparative and superlative forms of tricky are trickier and trickiest.
"Factory" is a noun and, as such, does not have a comparative or superlative form.