So I'm due baby #3 in 8 weeks and it's suddenly dawned on me that I've "forgotten" how to prep bottles With DD I pre-made bottles and refridgerated them (with sterilized bottles, boiled water and added the formula) With DS I sterilized the bottles, boiled water and left it to cool on the counter in each bottle and added formula as needed with each feed. ... fast forward to now and I'm like ok, are either of these ways "safe" in terms of bacteria etc. I've toyed with the idea of a tommy tippee prep machine, but the price tag makes me wonder if it's just another gimmick for parents to buy into. What do you/did you do? Thanks!!