Study the information about the comparison of adverbs.
Remember these changes.
Types of adverbsPositiveComparativeSuperlative
Adverbs with the same form as adjectiveshardharderthe hardest
Two-syllable adverbs ending in -lyearlyearlier the earliest
Two syllable or compound adverbs often
more often
more clearly
the most often
the most clearly
Irregular forms of adverbs.

Well - better - the best
Badly - worse - worst
Much - more - the most
Many - more - the most
We need to meet more often.
She trains harder than other sportsmen.
He gets up the earliest.