"Even mild concordance to the MIND diet resulted in a statistically significant Alzheimer's disease reduction."
So, even if you get the MIND diet roughly right, you're likely to benefit.
"Annual evaluations by clinicians blinded to the dietary pattern scores"
Trials which report outcomes in ALL members of a cohort, with the evaluators NOT knowing the intervention used, are more reliable than selective reporting or reports where the evaluators know the intervention used. This study is one example.
I would go to amazon and leaf through reviews of MIND diet recipe books. If many people say the recipes are delicious, you'll probably enjoy this approach and be able to sustain it with minimal stress. Plus you'll be able to use delicious meals as a social occasion, which tends to boost the health benefits.
Please share your findings. We can all learn.