Most infants don't roll over until 4 months of age, but a crying, flailing newborn could wiggle himself off a changing table. Therefore, it isn't safe to walk away from any baby, even a newborn, leaving him alone on a changing table for even an instant. If you use any type of powder, place a small amount into your hand to rub onto the baby. Don't shake powder from the canister near the baby, especially near his face, because it may create a cloud of powder dust which could be breathed into the lungs. If you are feeding your baby formula a microwave oven is very fast and convenient for warming middle of the night feedings, but be very careful.
Microwaves can superheat some spots leaving other spots cold even in liquids.
And microwavable containers don't get hot from microwaving. If you microwave formula to heat it, mix it very well before using it and test the temperature by pouring some onto your wrist, forearm, or the back of your hand. Once the cord falls off your newborn, which usually occurs by two weeks, you will be able to give him a bath in a tub. Depending on how high your water temperature is set, tap water can be hot enough to scald. To test the temperature of bath water you must immerse your hand or elbow into the water and hold it there.