I'm going back to work in 2 weeks, so I started trying to get my 2 month old EBF baby to take a bottle. After about 4 hours of trying the first day she took her first one (Playtex Nurser filled with warm breast milk.) I thought a bottle a day after that would be enough to keep her familiar, but the next day she put up the same fight. The third day I thought it might help to give her 3 bottles, and she took them all, but was still fussing and crying about it. Today I gave her 6 (two were Tommie Tippie), and it was the same scene. What should I do to finally get her used to taking a bottle???