Get one of these…

…so you can drop the pill into place, use solder-paste or just lay down a length of solder around the border, then heat the pill around the edge and let the solder melt in-place.

If there’s too much of a gap between driver and pill, a short length of wire pressed in-between helps bridge the gap.

Just be fast. As soon as the solder melts, the rest of the pill will already be quite hot, so you could just breeze right along the rest of the edge and get out as fast as possible.

If you could then pick up the pill with tongs and lay it on a big honkin’ chunk o’ metal to wick away the heat, that’d help cool it down, too.