Sue, my DD was down to two bfs a day only a few months older than your DD (I worked at least one day a week away from her). She continued on those two bfs until she was three, when I cut out the night time one. She still bf once a day until a couple of weeks before she turned four!

So you can certainly cut back to fewer feeds and still bf. It's more about how committed your DD is to holding on to what's still on offer!