My 4 month old son the past two weeks has become an absolute nightmare when it comes to napping nothing seems to work anymore he used to fall asleep on his own to white noise in the day time but now the only way he will nap is to be held and rocked this can sometimes take up to an hour in till he finally dozes off and he has to be held the whole time otherwise he will wake up, by the evening he is so grumpy and over tired where he has only slept for 1 hour in total all day, I've tried putting him in his crib and all he dose is cry, he won't fall asleep in a sling and the pram now no longer works either has anybody got any advice?