We have been at three feeds a day for about six months. If I'm not around she misses the middle one before her nap (but takes it when I pick her up). She shows no signs of wanting to give up any of those feeds and only cut back from four to three when she stopped one of her naps, so I'm guessing it's almost become a habit now to have the three feeds she's having.

Good luck with continuing as long as you both want!