What do you use to get babies to drink water?!

Babies are 9m and still nowhere near being able to indipendently drink water, not sure if this is normal but I’m assuming not?!

I’ve got the Munchkin Tip & Sip but they just chew the straw. Munchkin Gentle Transition Cup and MAM Trainer Cup, they just chew it upside down or hold it upright without realising they need to lift it for the water to come out. Most the time I just hold the Bibado Sippit as that’s the only time I can actually see them drinking the water, but they can’t hold it themselves.

I imagine me changing sippy cups/method every few weeks is doing more harm than good! Should I just stick to one and persevere. If so, what’s your recommendations? Happy to purchase new one if it means they can successfully drink water solo.