Den Keiki... usually needs a winter rest but not sure as it's not established

[Lagoon]

Rosie ..... Its a good idea that you brought the baby into the warmer area.
As far as mother and the ferts, most ppl will cut the feeds by mid-sept and continue to water until late oct or mid-nov. It depends on you're location. I would just allow the tempts to be my guide. Colder air = less water.

Sounds like you have a good handle on it all.