Oni's always been on .Soy. The concentrated liquid. It makes up to 30 oz. But if your breastfeeding, i'd go with .Gen's idea. Get the little pre made bottles and pop a nipple on one when you're ready to use it!
Oni's Dr. Didn't ask/mention if she was on powder/liqiud. But that's probably becasue you were breastfeeding prior to her .R.S.V.
I hate the powder. It's all clumpy n sh't. And it doesn't dissolve all the way, bleh! I hate it!!!
Oni doesn't mind cold bottles, I stopped warming em up at 4 months. She'll drink it extreemely cold. Or warmed up. I normally warm it up for her at night.
Sarah