Literally, the day my son turned 9 months old, everything went nuts with him. I had a great routine/ schedule going with him and he seemed to be doing pretty well. But bam….he started refusing to sleep, separation anxiety through the roof, clingy, crying, and fussy. Oh, I should add that he has been teething off and on for about a month now. He cut 3 new teeth and has another one on the way. I have been scratching my head trying to figure him out. I want to blame it on teething, or the length of his wake time, or the fact that he is adjusting to his new home since we just moved about a month a half ago, but I think it is really no one particular thing. I believe it is the combination of all these factors playing together. I found a website that really hit home with me and the trouble that I am experiencing with my son at 9 months. Everything that this article mentions is very representative of my son at this moment. I thought it was worth sharing with all of you. The article also gives some good suggestions to help your baby with sleep problems, teething, and separation anxiety. http://www.thesleepstore.co.nz/Sleep+Information/Babies+4+to+12+months/Sleep+challenges+with+9+month+olds.html Many of the my son’s difficulties also line up with the developmental period mentioned in Wonder Week 46.