What do you feed them? My thoughts, I think your sundew is starting to look crowded and if it were mine I'd tip everything out of the pot, and try to pull them apart, but if they were fused, then I'd need to separate them with a razor. How's that for topic? :D

You can try to separate them but they may be too intertwined. You can try to take some leaf cuttings and start some new plants however.

I'm probably going to wait till the light levels increase (feb or march) and then will see what I can do with it.

Wait until light levels increase. That's when dews like that generally kick into high gear.

As Tommy mentioned, the roots will likely be intertwined. Unpot the entire mass. Swish the root mass around in water to remove the media and loosen up the roots. If your tap water is fairly low in tds, you can use a hose or sink faucet sprayer to remove more of the media. Separate the plants as best you can. Some roots will break. Not a big deal. (Particularly longer thicker sections may send up additional plantlets if planted shallowly.). Repot with as many per pot as you wish.