Water pH @ beginning, middle, & end of flower for soil

Basically what I’m looking at is the different pH throughout flower in soil. Basically, what I want to know is it better to start flower at a higher pH (around 6.9) and gradually lower it throughout flower to around 5.8. Or start flower at lower pH (5.8 and work my way up to 7.

I know that some people will aim for certain pH’s for the different stages of flowering and would like to know what I should be aiming for?

Also would like to know same thing about pH for different stages of veg.
As always thx for the help.

Should be aiming for a pH adjusted soil then any water you give it will end up the same pH as the soil.