Re: If baby sleeps past 3 hours, should I pump?
Welcome to the forum!
As long as your baby is gaining weight normally, peeing and pooping normally, not excessively sleepy, and is only occasionally going >3 hours without nursing, I don't think there's any need for you to do anything but maybe try to gently wake her around hour 4 during the day and maybe hour 5-6 at night.
It's generally a good idea for new moms to avoid the pump when nursing is basically going well. It's very easy for a new mom, whose supply is naturally high and also very responsive to additional stimulation, to pump herself into an oversupply. Oversupply isn't what you want: it means more frequent discomfort from fullness/engorgement, more risk of plugged ducts and mastitis, and can make letdowns so fast that the baby will struggle with them.
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