I am a teacher and after a long summer, school's back in. I spent the entire summer enjoying all my time with my little princess and breastfed on demand. She has always refused bottles from me and my husband. She would take bottles while at Grandma's house, as long as I wasn't around. But now that I am back at work, my 12-month-old is refusing EBM. She will eat plenty of solids and drink some juice and water to hold her over. Then she will spend most of the evening and night nursing. I keep hoping that she will give in and drink more EBM. So my mom continues offering her the EBM. Should I worry? Any ideas?