Am I doing something wrong?

So my son will be 7 weeks old on Christmas, here lately he isn’t sleeping as much as he was before- and I know he’s getting older but I’m a first time mom and don’t really know what to expect. Google says his wake windows should be 45-60 mins at a time. But for him he wakes up around 9am and will stay up till about 2:30 pm. Then he sleeps for about 4-5 hours and is back up until about 11. Then will be back up between 1-3:30 or 4 then again at around 6 to eat but goes back to sleep. Is there something I need to be doing or is his sleep schedule fine?