How much sleep does your baby get?

Caitlin • Married on Halloween 2015 👻, expecting our first baby Aug.17 2016!
I've read that babies are supposed to get 15-16 hrs of sleep a day (including the night), but mine never sleeps that much... We clock in at about 10-12 hrs, depending. He is also 6 weeks old. How much sleep does your baby get??