What can I do?

So I had an ultrasound yesterday and I’m 29 weeks. She measured my fluid levels and she said they like to see it between 6-26. 6 being the worst and they put you in the hospital. Well I’m at a 9. She said to drink a ton of water and we will see if that helps! Have any of you had this? If so what was the outcome? Also is there anything else I can do to help it rise?