Yard Sale and Sleep

So today I'm living the American dream and having a yard sale:) It will continue into tomorrow, too; don't be jealous:) I joke about it, but in just four hours today, we made $150!! Isn't that exciting?

I have a question for you moms/aunts/sisters/babysitters...anyone who knows babies. Lily sleeps ALL the time! Is that normal? I have a book that says she should be sleeping only 15 hours, but she sleeps way more than that. She's awake to eat her bottles and then for probably 4 hours or so at the MOST during the day. My husband thinks it may be because she's on formula and rice cereal in the bottle because of a nasty case of acid reflux. He says her little system probably spends all it's energy in digestion:) What do you guys think? I'm kind of in the mindset that if she wants to sleep, she should. She sleeps pretty well at night, so it's not like she has her nights and days mixed up. Help a new mom out! :)