Need help with DI

Hi folks, I just gave my gmat yesterday. Got a 645 (Q86, V85, DI 74), DI was surprisingly low. In all my mock my ranges were 87-90 in QA, 83-85 in verbal, 80-82 in DI. What felt different was most of the DI section was verbal and logical based and very less math based Qs. In DS and TPA also most very non math related with lengthy stem due to which I blanked during the test.

I also took DI at the end section so a bit of fatigue was there too. I am planning to take a retake in 1-2 months, any suggestions from the community on how to approach DI now. I know my quant and verbal foundation is strong as seen but stable scores.

I always got 12-13 correct in DI in my mocks with high accuracy in DS, Graph/TA and attempting MSR and TPA and strategically.

Also any resources for verbal based DI questions. I saw gmat club question bank but non math based questions were comparatively less.