B.B.
Hi S., I wrote about the same thing about 2 weeks ago, my daughter Alexis was born NOV 6th. She was sleeping throught the night and now is up several times. My Dr. says she is teething and that they go through growth spirts, I have stopped swaddling her because she is always getting out of the swaddle now. The Dr. started me on solid foods and I noticed it does help. Alexis usally falls asleep at 7:30 -8pm but wakes up at around 9:30pm (I give her a bottle at about 9:40pm) and put her right back to sleep. It is so hard, I know. I wish I could help more! Im going through the same thing!
Good luck (to both of us)!