My seedlings are now two years old, the larger looking ones. My seedlings from the beginning of this year are still very small. I don't fertilize for faster growth.
As long as they are looking healthy, keep doing what you are doing. You don't want to let them dry out all the way when brand new sprouts. They can dry out a little between watering once they have a nice set of leaves.
I moved the thread so we don't loose what is going on here. It is easy to loose important questions/information in some of the threads with multiple pages.