Don't worry about the bottom/older leaves They don't get better looking, and your just gonna end up cutting all that off soon enough anyway. Just focus on the new growth at the top. Which looks good. I wouldn't kill these Maybe cut the light some though, either dim, raise, or knock off an hour. They'll be a bit stunted, but you're so early on, I'd let em rock on. Let them go another 2 weeks and then see what you want to do. But these plants aren't screwed at all.