I believe both are needed, IFT mocks are relatively easier than Schweser but you wouldnt want to miss Schweser Mocks as well, they are not hard but worth trying
I agree. Kaplan mocks are more tricky though. The wording, amount of choices (ie given 5 statements and need to pick 3 in MCQ format that are correct), length of vignettes for Schweser are a little overdone in my opinion. The real exam will be much more straight forward, hence easier. IFT mocks are very representative of this.
If you are scoring in low 60s on Kaplan mocks, I wouldn’t panic. Your score should be higher on real test day, but if you are scoring low 60s on IFT mocks? There’s probably more work to do in all honesty since you are probably gonna be borderline or maybe not pass.