With Olivia, the valve thingo in the sipper cup was all too hard, so I took it out, and also bought some cheapo sipper cups that just have a hole, so as long as she tips it up, water comes out, & she doesn't have to suck too hard.

She gets damp and messy, but in the Darwin heat, that is no real issue. I got her onto a sipper cup really early so that she would make a habit of always slurping water. The first month or so was very wet & messy, but worth it, as now she drinks water by herself out of a sipper cup, especially important up her in the car as the heat gets unbearable and I worry about her dehydrating.

I did a lot of offering it at the same time as feeding her solids and now it is part of hte habit.

Perseverence I guess, and lots of changes of damp tops!