Hello.
I know every situation is different and it depends on what test you get and what background info you know but, I can only give you advice on my own experience.
I took kaplan tests and topscore pro tests, took the DAT twice and in both DAT tests that I took I got higher scores on the real thing both times.
Honestly the DAT has very random stuff in bio section so don't expect to ever be ready for this it just depends on what you know and the questions you get.
Gen Chem and Organic are very similar to kaplan but my first test I had no calculations at all, second test I had to calculate everything myself, kinda strange how different each test can be.
Math and PA is another story. I used crack that PAT for mine and it prepared me well. Math is not a good area for me so I am not even gonna go there with advice on that😀
Any other questions let me know and GOOD LUCK you should be fine with your kaplan scores the way they are though!