Breastfed baby and going back to work

I’m going back to work in a couple of weeks and my daughter has never taken to any bottle, and only taken short sips from her sipppy cup and open cup of water. I have tried most recommended brands..... I also don’t think she’s interested in water at all, but we’ve always had it on offer. She will be 11 months old when she goes to nursery for 3 long days and I’m concerned with how she will get any fluids during the day. She has always breastfed every 1-2hrs around the clock, even with 3 meals a day and the odd snack. I have the option to visit the nursery during my lunch break to feed her breastmilk, but not sure if this is the right thing to do for helping her transition into the nursery, especially with a very short visit and her possible anxiety of leaving her twice in one day.... and also the possibility that she will she just depend on me for fluids and not really make the effort to go for a cup. Not sure what to do. Any advice would be appreciated.