My LO is 11 weeks old. I'm breastfeeding with a sheild (latch problems) and introduced a bottle at 4 weeks. She's been doing great, then 3 days ago she started refusing bottles. This is a big problem because she's in daycare and I'm going to be out of town next weekend. She typically uses tommy tippee bottles. I have also tried avent and that didn't work either. Any suggestions?