Actually I seldom try indoors unless I'm starting trays of seedlings.
And when I did try to keep some aging seedlings going in quart pots in front of a South-facing window in the early Spring, they only got sun very briefly each day (during which they kind of cooked).
But years ago when I did try a few indoor plants, I discovered that they expected to be watered regularly. What a great deal of unwarranted faith they had in my reliability at that age! How sad their disappointment.
(LIGHTBULB!)
Maybe that's why, now, I can't stop over-watering seedlings. The ghosts of past, dried-up houseplants haunt me subconsciously so that I'm compelled to water them every time I walk past.
