Preparing Your Baby's Formula

The formula you buy will include instructions on how to prepare it, whether it is ready-to-feed, concentrated, or powder, and you should review and follow those instructions closely. If the formula is too diluted, your baby may not get enough calories, or if the formula is too concentrated, she may not be able to tolerate it.

Once you know how to make the formula, you should decide how much to make. Because you can't reuse any leftover formula, you should try to make just the amount that your baby will take in one sitting, which will be about two to three ounces the first month.

Although it is often recommended that you boil water before using it to make formula, you may not have to do this if you are sure that your water supply is safe.