When you're bf you don't need added water, your boobies are really clever! They adapt to the heat so in summer when it's hot, you get more of the watery foremilk so that quenches their thirst! Even if you go abroad you won't need to give them water!
Ella sleeps on her front now, I used to turn her back over, but now I've figured she's obv comfy and if she's strong enough to turn herself over she's alright!