Good heavens no! I didn't mean to get rid of your current coleus! But they're plenty big enough to take another round of cuttings (or 2 or 3 rounds of cuttings) and end up with 2 or 3 times as many. Keep the old as donor plants and keep starting more. You can use your current, big plants for lots of coleus. Have more for yourself. Give some to friends as gifts. Donate some. Whatever.
Karen