Amniotic Fluid Levels?

Clarissa • Mama
I'm 32w.
My doctor called me in for an impromptu appointment today to tell me my amniotic fluid levels are one away from being dangerous?
He told me we'd do biweekly ultrasounds until the baby arrives to keep track and to drink more water. Like she's growing properly and everything, so we're okay I think. He didn't seem urgently worried so I'd say so?
Have you had this? Do you know of anything else that will help?
(If you're wondering how he checked: I went into L&D for decreased movement and they had to do an US- idk how else he'd know though)