Once it’s established that your plants are ready to be fed, each pot should be pretty well soaked and have some runoff. Then allow to dry out. How much this takes will depend on how large your pots are. From there you may want to rotate feedings with ph’d watering if using soil.
The mixture ratios are a baseline, and your plants may require more or less. You have to watch them and determine if any changes are needed.
FFOF soil will last 4-6 weeks without needing to add any nutrients. When ppm’s drop to 1,000 or less, then you can start feeding. Water only is fine until. When mixing nutrients, it’s best to mix in whole gallons at a time if that is what the chart measures daily/weekly feedings in. This will help keep you closer to your target ppm’s.
Edit… Just saw Berman’s schedule has per liter as well as per gallon. With proper watering routine, you won’t need to measure in liters, when feeding time comes.
Just give pH’ed water the first few weeks (6.2-.8, if your source water needs it. Distilled and RO don’t need pH’ing). Wet/dry is what they prefer. You can use a humidity dome the first few days. Then from there, water in a ring a couple inches from the stem, and adjusting for growth from there.