9 month old nor drinking when I'm at work

[SunnySide1992]

Hi everyone! My DD is 9 months and I've just gone back to work part time. I do one full day a week and 2 half days. She is exclusively breastfed and refuses a bottle ! She will try to drink from a sippy cup but most of it ends down her rather than in her 🤦‍♀️
My mum is looking after her but she refuses to have any milk or water with nanny.
Any suggestions how I can get her to have some water another way?
I'm going to start coming home on my lunch break when I do all day to top her up but open to any suggestions!
I did have a friend suggest a wet flannel for her to suck on?

Lots of wet foods during the day like yogurt and the fruit pouches?

Push with different types of cups and bottles, and practice with your mum giving the milk. Lots of wet foods like soups, purees etc if you can

Will she drink through a cup with a straw?