How do I get my 7 week old to sleep longer?

kristendc7

My 7 week old is barely sleeping in the night. He typically sleeps for 3 hours then up for an hour feeding then sleeps for 2 hours then up for an hour feeding and then sleeps 1 hour. It's very difficult and I am exhausted! I don't know how to get him to sleep more. I begin his night routine at 9:30pm and his first night feeding starts at about 10:00pm. Once he is awake in the morning he ends up falling asleep an hour after being awake, which makes me think he's not getting enough sleep at night. How can I get him to sleep more during the night? Also, he is only napping about 4 1/2 to 5 hours throughout the day. I am open to any suggestions. Please help