Sleeping too much?

Jenn

My little man is 11 weeks old today. About once a week, he has a day where he sleeps all day and night! He will sleep for 3 hours, wake up and eat and have a diaper change and then sleep for 3 more hours. This goes on all day and night. Sometimes he struggles to stay awake during the feeding. The next day he is usually back to his normal playful self. Is this normal at this age?