Hello, a couple of weeks ago they put in water 70, oligohydramnios, ul…

Hello, a couple of weeks ago they put in water 70, oligohydramnios, ultrasound showed even less water 50, the baby turned her head down with oligohydramnios, I took antibiotics as prescribed by the doctor, can anyone recommend what to do so that the water increases or at least doesn't decrease? The condition is good, it grows and develops normally...