I’m new to this group but I have been growing plants indoors for a couple of years myself. I live in a house though, so that makes it much easier for me to use soil instead of nutrients.
What I’ve discovered is that the water temperature plays a big role in the speed at which your plant grows. The water should be a little hotter than warm (but not burning!). The warmer the container stays, the better for the plant. To do this, I use black pots in order to attract the sun. I occasionally turn the pots around as well to get al the roots warmed up.
Another thing plants LOVE is humidity, so if it’s possible to have a small humidifier in the room it would get your crops ready in no time!
I hope that helps with your indoor planting process!