Hi my ds is 8 weeks and he usually sleeps for around 2 to 2 1/2hrs in morning and same in the afternoon sometimes a bit longer. But in saying that some days are different and he will have 2 x 1hr sleeps in the morning and then same in the afternoon. I never wake him if he sleeps longer as kristin said they will wake if hungry as long as peter is putting on weight and sleeping for you at night. Yesterday he slept for nearly 4 hours in afternoon but didnt have more than an hour in the morning and he still slept well last night. But like you i am not sure if they should have a routine. Good luck.