We've had this problem since nursery, she's now in year 3. Wednesdays she has art club, and last week, the first week of the club, she told me she hadn't had any water from lunchtime at 12.15 until I picked her up at 4. She forgets to drink and says she doesn't feel thirsty. Because I'm not there to nag her, I have to rely on teachers to remind her. I'm hoping having a water bottle in her satchel with her pre-club snack will help. Any other ideas please?