Question for everyone How long/often did you boil your baby's bottles? And how long did you use bottled water for…

I use to boil his bottles every 3 weeks for 15 minutes. I boiled his water until I started to see tiny bubbles. not boiling bubbles

Honestly I never used a set time, I would just test it on my wrist every now and then to get the perfect temp. I used bottled water for about 6 months and then started using filtered water.