I found it very useful to use a magnet sheet when doing these repairs. I use electrical tape or a sharpie to make a grid, and place each micro screw in a separate box on the grid.
I work directly over the magnet sheet, so that if something drops I have a better chance at not losing it.
If you do lose a screw, go over the work area with a fridge magnet. It will pick it up if it hasn’t popped too far away.
That’s a very clever idea, thank you!