From day 1 I bath 🛀 my lb together with my 2 and half year old LG in the big bath just not loads of water 💦 it's so much easier and he enjoys splashing around in it as more room to move I never bothered wasting money on a baby bath x
I have a bath seat for Max. I have bathed with him as well but day to day it's easier to bath my boys together 😊 Once he can sit up I don't use anything just lay a bath mat down.