It took a few weeks for DS to get the hang of it too. I would just keep offering as Barb said and she will eat when she is ready and there will be no stopping her. DS always eats breakfast and lunch with me, and his Dinner with both DH and I. Like you, it did feel like a slow start to begin with.
We're two months into BLS here, but it feels like longer seeing the amount of progress he has made in such a short time.