When I did this with my dad's 2 ¼ x2 ¼ slides, I used a light panel/box, a cardboard box, and the camera on a tripod.
My light board, if I laid the slides right on it, had banding. By placing a card board box over it, with a hole cut in to let
the light shine onto the slide, the foot or so space between the light board and the hole would defuse the light, so
banding was no longer a problem.
I used a Sony a7III with a Canon 50mm f2.8 macro lens.
On the box, I taped a couple of stops so swapping slides was a piece a cake.
I think I took something like 550 photos in about 3 hours.
Of course then the processing had to happen.
The processing wasn't all that tough, for the most part.
I'd press the auto button in camera raw, and then a little bit of moving sliders.
Once in photoshop, I had a ton of dust to remove from the photos.
If you do this, have a puffer, or a can of air to clean you slides/negatives.
It will save you a bunch of time later on.
Of all those shots, I only processed around 35 of them, but I do have them all on digital now.
I wish I would have taken a photo of the lay out, but I didn't.
A pre processed and post processed photo.