Yes, every watering. If you get nute burn or salt buildup, reduce the amount every watering. You can play with alternating feed/water. I've read that it helps beneficial microbes recover from the synthetic nutrients. But, to me, it seems like it's the same either way. Less harm continuously? Or, more harm followed by recovery.
Monitor your runoff ph and ppm. The trend of those numbers can help you know if you should decrease the amount or play with water-only feedings. (Or, if there's room for stronger nutes.).
I grow photos and autos. I use the same strengths for both.