Hi ds has been sleeping through 9-10 hours for a while. He is now 4mo +1wk and 2 nights in a row, totally out of character he has taken ages to settle down at the start of the night ie having to resettle him every 15 mins for over 2 hours. Last night he woke up shouting at 4am, I bf him which usually sends him off but it was another 2 hours before he settled again!
So could this be a bad growth spurt? Teething? An illness? (he has been a bit snuffly) Or is it the dreaded 4mo sleep regression? Do all babies get this at 4mo?