My DS has nights where he boobs straight to sleep and other nights where he boobs, fusses about, boobs, fusses and then boobs to sleep. Then every now and again he'll reject boob and fuss about trying different sleep positions and then fall asleep himself (I always find it miraculous he can do it!!) I would just keep offering. He may be starting a pattern (or should that be lack of pattern!) like my DS. I figure it is a really gradual dropping of the bedtime boob but that it may take months and months before he will actually completely drop it.