Girls, help me, I'm going crazy, I'm very nervous about it. Every time…

Girls, help me, I'm going crazy, I'm very nervous about it. Every time before bed the same thing. Drink, drink, drink. When will this be over? I give her water, then she asks for more, then even more, and even more, and still more. On the third try I already try not to pay attention, she has a tantrum and screams in my ear, just until I give her water ?I don't know how to fight with this anymore. Tried giving her one time in the kitchen and clearly told her "Here you have some water, now the kitchen is closed and there won't be any more water". Nothing helps?It's impossible not to pay attention either