or a couple of months after that.
Baby doesn't need drink water when only feeding milk. Plenty of water in milk.
Also my child was born in winter so for a year there's no need for additional water.
She started eating table food when spring came after her 1st birthday, then
she caught some flu in early spring so I gave her a training sippy cup, that's how we started drinking tap water.
Tap water is all she needs for water. Fluoride treated.