>>782244That thyme looks really really leggy too (pic related is what they should look like, compare the internode lengths). I can't repeat it enough, please do all of them a great favour by putting them outside, is that your garden out there?
IIRC you're German too so you probably have the same shitty constantly drizzling autumn weather with zero sun right now, which reduces the little light behind such a window even more.
Also, which direction is that window facing to, north?