Tips for making baby active in ultrasound?

HayLee • Mother to two beautiful babies. 3 year old son and 18 month old daughter. Expecting baby #3 August 20th,2016
I went to an elective place at 13w3 days and baby was so sleepy. The tech did everything she could to get baby to turn over so we could get facial shots and nope! We got to see some limb movement and a weird upside down pose baby put itself in but we weren't able to confirm gender or get facial shots. I go back in two days and wondering what I could do to get baby active and moving a lot lol.