I had some of the same issues when I first started I was doing soil indoor and they croaked on my second week of flowering it was so hard for me to keep them alive to that point. It was alot of work!!! I know growing is work but it was really difficult so I stopped doing soil indoor. But for you I would check the soil my plants started doing better when I bough expensive soil from the hydroponic store. Do not use cheap or regular soil. Your ph should be 6.5 and also Distilled water is what should be used, it also has a high ph. I was over watering my plants, they told me that a baby should only have about a shot glass of water daily and do not put right over the roots, but in a circle around it..... Hope this helps a little bit It was just so much easier for me to stop using soil and buy a small hydro setup.