So, my 17 wee old can only seem to stay awake for a maximum of 1.5 hours and often he wakes from his nap and is yawning his chops off after half an hour. I'm getting a bit worried as I think he should be staying awake for longer. He also naps for quite long periods. This morning he woke at 6.30, napped from 8 til 10am with me resettling him after 45 mins. He then fed at 10.30 and was giving all his sleepy cues by 10.50 and I've just put him down again. He will probably sleep another 1.5 hours with me resettling him half way through as he always wakes crying and goes back off easily. Should I be concerned about this, or is this quite normal? Advice please! Thankyou.