If you are in soil I would give it a light feeding and then finish out with just that "plain" water routine. If in coco or hydro I would continue to feed until about a week out and then start with a "flush" or just a plain water.
I grow organically so ppm meters are useless to me. Since you use chemical fertilizers, ppms are important but honestly it all boils down to ph. If you are ph adjusting your water before you feed, the you are golden. As long as you don't go crazy with the feedings and burn them you should be fine. Coming from me man, you are doing a damn good job. So whatever you are doing keep doing it
if it isn't broken...