Food...is ..kind unnecessary. Like...once or twice a year is enough, if you do it right. If your soil is ok, you dont even need to bother( ive fed my plants once improperly, with disastrous results).
As for water, 2-3 weeks in winter, 10 days to a week in summer. Its april, and some of plants are getting water-needy thanks to the quarantine , being grown at a different location/