I am going to post this in the sleep section also. I apologize ahead of time for long post.
Some background. DS has struggled nearly all his life with waking up several times a night. We started having DH go in to give him a binky and got him to the point where DS was sleeping all night, or waking 1-2 times in a 12 hour period for several months. It was HEAVEN. He has been easy to put to bed since 8 or 9 months. We just do our nightly routine, I nurse him and then put him to bed, wide awake. He maybe needed to be given his binky and laid down into bed again once or twice, but he was very easy.
About a month ago, he started to wake up more often at night. He had been so used to getting to nurse every time he woke (because he wouldn't wake between 11 and 5, which were DHs times to take care of him) so he was VERY upset when he didn't get to nurse. He was sick at the time and getting his last molar in, so I just nursed him. We tried after that to have DH go in and give him a binky and he would scream for literally 1-2 hours with DH in there trying to calm him down. He would only calm down if I nursed him. He was yelling "mama" "nurse" and "other side" (I say other side when we move to the other side, so that is how he asks to nurse now) the entire time. We decided that it was easier on all of us to just have me nurse him. The middle of last month, I went to a training and was gone more than usual. He started to get VERY clingy to me and even point at the door and cry for me, which he has never done. That week, he also started to demand that I take him into bed with me when he woke up at 5, when he used to be very insistent that he wanted his own bed. He also started insisting that I nurse him until he was almost asleep (which would sometimes take 45 minutes!!!). The last couple days, he has been waking every hour or so until I take him into bed with me because I can't handle "getting up" to nurse him (even though DH brings him into bed) and take him back to bed. Last night, he wouldn't go back to his bed when he woke at 11 and then had to sleep on me the entire night. He does wake several times when he is in bed with me and has to use me as a pacifier, which has made me more raw than I was when I first started nursing him.
Is this normal? Will he go back to his previous "normal"? Why would he suddenly just drastically change the way he sleeps?