It's never a good idea for roots to sit in water... that will lead to root rot and a very sad grower.... Water until you have runoff, let the pot sit in any runoff for a few minutes to see if the plant will soak up the runoff... if it does, water it some more - keep doing that until no more runoff is being soaked back up into the pot and then get rid of the water that's in the saucer/tray... all will be well.
Good luck!