My baby is 1.5 month old , previously she was sleeping at night around 10 pm and waking up 7-8 Am and in day time around 4-5 hrs nap for 30-60 min. But now she is sleeping at night around 10 only but waking up at 3-4 Am, and in day time max 2 hrs nap for 15 -30 min only , she become tired but she do not sleep , I have checked on Google baby should sleep 14-18 hrs in this age for brain development, my baby sleeping max 9-10 hrs in 24 hr. should I need to worry why she is not sleeping much now even she wants to but she sleep for 5 min and then wake up. Pls suggest if it is normal or I need to worry