I don't think I sterilized bottles for my little ones after 6 months, but I asked the dad and he said he still sterilizes everything (so I feel like I should be too if that's their preference, even though it seems a little pointless).

The jug of water is a great idea, however right now I'm just looking after him casually/infrequently so I probably wouldn't bother.

Thank you for the reply! Much appreciated