Same issue here! NWs have recently increased from 2 or3 (which is still a lot for this age I think) to 4+, with no obvious pattern. I have noticed his longest sleep cycle the past 2 nights was just 2.5 hours, which is killing us both, as LO wakes tired and I am a zombie. LO cut his first tooth 4 days ago, and the bad nights started after that. I guess maybe more are going to come soon? I've been nursing to sleep after failed attempts by DH at rocking/holding him. Last night was the worst night so far. UGH! Good luck, let me know if you find a solution. I'm so exhausted that I nurse a lot more than I want to bc it gets us all back to sleep faster.