I use 5 gallon buckets for my DWC.

I pick up the plant by the net pot, set it in a spare clean 5 gal bucket

dump the old solution

thoroughly clean the bucket, airstones, and hoses

refill with new solution

put the plant back in the bucket.

I do it every monday.

That seems to work pretty well for me. it does get tougher when the plants are bigger, ScrOG'd, or otherwise tied up/down.

Alternately, if you have extra airstones, you could just fill a new bucket and transfer the plant directly to a new res.

skeet.