Dosing nitrates is a much better option than feeding more. The food has to break down into nitrates, which takes time.
Another thing I have noticed about dosing nitrates, is the corals LOVE IT. I have noticed better color and growth while dosing.
It takes awhile for your tank to get saturated with nitrates if you were THAT low before.
I made my own DIY w/ potassium nitrate and its a much cheaper option than having to dose NEOnitrate from brightwell.
The people whom are saying "Just feed more," or don't chase are just parroting previous advice and don't have real experience with dosing nitrates IMO.
I keep my nitrates at 20-25ppm with an SPS dom tank. I dose a couple ppm every day