How would one go about adjusting timings/sub-timings on this shitty RAM etc??

Are there any guides I should reference for this specific setup/build on a B850?

I can run 6400-6600M/T with AI EXPO BOOST(should I just use regular EXPO profiles/high bandwidth mode instead?) but kinda wanna stick to the baseline 6000-3000u/mclk-2000flck for max stability? or stay on/try 6400/6600-32000-2133? and just fuck with the timings...?