1) with a newborn baby, you should allow 12 diapers per day and 1 extra day's worth of diapers as a cushion. In this way, you should never run out of diapers.
There are approximately 30 days in a month so thats already 360 diapers a month.
2)
newborn = 6-10 lbs
size 1, small = 8-14 lbs
size 2, small/medium = 12-18 lbs
size 3, medium = 16-38 lbs
size 4, large = 22-37 lbs
size 5, extra large = 30 lbs
size 6, extra extra large = 35 lbs
training pants or "pull-ups" for toddlers = 30-80 lbs
3) yes- buy in bulk!!! Everytime you go to walmart buy a pack of diapers, im not even kidding.
If you have anymore questions on anything!!
you will do fine...Its all going to be so overwhelming and life changing but I promise I will be here for you!! Any time you have a question call or email me.