What does the cryptic crossword clue "Reduce in size slow dance requiring modification (5,4)" mean?

The definition is "Reduce". The wordplay uses an anagram. anagram of SLOW + DANCE = SCALEDOWN; definition: "Reduce" The answer is SCALEDOWN.

Reduce in size slow dance requiring modification (5,4)

Daily Mail Cryptic #17553 | 15 Down | 2025-02-12 flower