I’ve built a lot of dovetailed drawers. Clamping and glue up has always been a pain. positioning the clamps,positioning cauls and keeping everything square. A few years ago it dawned on me, my joinery is accurate square and very snug. After knocking the assembly together, it stays put. So why clamp at all? I now dry fit the parts, take apart and fit using a hand plane. When the drawer is properly dry fitted, I paint the joints with glue, knock it together, wipe the excess with a wet rag, wrap the corners with wax paper and shove it into the opening, aligning the front with the face frame. No clamps, cauls or hassle, and a perfect fit.
Hope this helps some of you out there.