'Little Couple' Sneak Peek: Will's Hospital Stay

New parents Jen and Bill are still doting over their adorable son, but as the pair prepares to head back to work after a brief leave, William still needs a few last-minute tests and isn't planning on making it very easy for anyone. 

Pics: Celebs and Their Cute Kids!

In our exclusive sneak peek at the all-new episode, the fidgety three-year-old twists, turns and wails as he undergoes the initial steps of a sleep study, but mom and dad are quick to calm their testy tot during the uncomfortable session.

Don't miss Little Couple when it airs this Tuesday at 10pm on TLC.