struggling thyme

My Thyme plant that was in the mudroom has been looking sad. Only this piece of it is left alive. So I knocked it all out of the pot, trimmed away the dead plant matter and potted it afresh.

Then moved it into the front windowsill next to the other four Thyme plants (which are flourishing!) I've been cutting off them for cooking, so they're starting to get nice and bushy. Nowadays I slip a piece of cardboard between the plants and windowpane at night, to keep the chill off.