Health visitor advised me to give my 7 month old son as he is weaning. She didn't actually state how much to give him. I've only just learnt about water intoxication and worried that I've given it to him. He has had 5oz of water over the course of today. I won't be giving him anymore obviously. He seems fine at the moment he's currently sleeping. But I'm just really worried. Is that amount of water going to hurt him?