It sounds like you're trying to adjust your feeding schedule to address concerns about the color of your plants. It's great that you're attentive to their needs! Here are a few suggestions:
Monitor Plant Response: Keep a close eye on how your plants respond to the adjusted feeding schedule. If the color improves and the plants seem healthy, you're on the right track.
Gradual Changes: Plants can be sensitive to sudden changes in nutrient concentration. If you're transitioning from a 1/4+1/2+1/2 water mix to feeding for four days in a row, consider making the transition gradually. Maybe start with two consecutive feeding days and then increase to four.
Check pH Levels: Ensure that the pH of your nutrient solution is within the appropriate range for your plants. Improper pH levels can affect nutrient uptake.
Evaluate Nutrient Ratios: Make sure the nutrient ratios in your solution are suitable for the current stage of growth. Plants have different nutrient requirements during the vegetative and flowering stages.
Consider Plant Size: As your plants progress through their growth cycle, their nutrient requirements change. Adjust your feeding regimen based on the size and developmental stage of your plants.
Maintain Consistency: Once you find a feeding schedule that works well, try to maintain consistency. Sudden changes in routine can sometimes stress plants.
Remember that every grow is a bit of an experiment, and it's great that you're actively working to optimize the conditions for your plants. If you notice positive changes, keep refining your approach. If issues persist, you can always reassess and make further adjustments. Happy growing!