My lo was sleeping through the night at around 8 weeks and we were thrilled!!! However, last week (last Tues) he got his shots. Last week was the worst week since he was born! It was like he was a different child! He is much better this week, thank goodness, but he has yet to go back to sleeping through the night. He wakes up 2-3 times a night crying. He is not hungry or wet, everything appears to be fine. We don't rush in, we wait a bit to see if he can fall back asleep but he doesn't! We go in and shush/pat and put his paci back in. Sometimes he wakes up only 20-30 min later! Any advice?