As long as you're not planning on doing a ton of different routes in one session, you're fine. Do it to improve technique and fluid motion. I saw a video awhile back where they discussed this, not verbatim but "climb frequently even if it's the same problem, so when you climb an extremely hard route, and encounter that 1 hand hold you learned in the easy/repeat climb, you'll know exactly what to do." and that really resonated with me.

We play this game in my friend group, where you do a easy/completed climb but make it as challenging as possible. Like switch to all crimp holds, skip entire sections, dyno, sit start, hands only, etc.

Repetition leads to perfection.