Be careful with feeding specialy autos need less nuts than fotos and smaller plants in big pot also need to feed later (after the roots fit the whole pot and use all of the nuts in the soil). There is no reason to be ashamed of watering once a week, when it needs to take this long (big pot, led light, watering for adjusting pH and EC levels...) you only need to dry it out properly between and thats important the most, because when you will not be patient, you are risking root problems. You should definitely go nuts-water-nuts or maybe better nuts-water-water-nuts. When you will go to water next time, prepare to get the same results as you got yesterday, only with the difference, that you will be able to reach lower levels of runoff faster (with less water used, but it will still be runoff somewhere around 0,5 - 1,5 litre of the volume. As I wrote, I would water it (small flush if you want to hear it) untill I will get EC 1,2 (for autos) and when I will get this value I would immediatelly go nuts on EC 1,3... when you do this, you can bet you will see evertime you go water the same results and you will already know what to do and you will be always do the same and never run to big issues because you are refreshing the soil environment. As I said its a little bit more work and time, but when you get to know and understand what is happening there, it will become routine...