J.K.
I don't know what is normal but my son stopped breast feeding when he was 8 months old on his own. He would not try bottles but he tried a sippy cup and that was it. I tried pumping and putting it in his cup but after a little time he wanted no bm. He is 4 now and boy is he healthy. My doctor told me they will let you know when they need something. Have you considered trying milk a little early? or formula?