Question for Stinky

I have this nutrient availability chart (for soil) that lists the nutrients and the pH level where they are best absorbed in. I see there are a few that are best absorbed at 6.3 and a few at 6.8. I have been watering/feeding once a week at a pH of 6.8. But I was getting some deficiencies. I was wondering if it would be best to alternate my feeding/watering schedule to 6.8 one week and then 6.3 the next. And so forth. Or is there a better way? How do you do it?

I've heard of people doing that- letting the soil cycle from 6.5 to 6.8. The other thing you could do is go down to 6.6 and split the difference. 6.3 isn't that great and I would not purposely try to bring my nute solution down that low.
The other thing you can do is get in a habit of doing a regular but quite weak foliar feed with a micronutrient.