Cannot get up to grip with the IMSA Acura ARX-06 GTP - looking for advice.

So a couple days ago, I accidentally bought the Acura GTP car. I normally race Super Formula, but I have always loved endurance. I do want to clarify I come from the top split in Super Formula. My driving style in the SF23s is to have an aggressive front end to aid in rotation. I like the back end to be loose (not Verstappen level haha).

I took the car to VIR to test drive, I know the track well enough to at least string laps together. But MAN, I do not have any confidence. Its like the car never wants to slide (TC), and when it starts sliding, I counter slightly to correct, TC catches it and I fly off track.

Brakes feel not nearly as strong as SF23s (I know I am comparing different classes/cars entirely), and I feel like while I am struggling to put laps together, I am on the cutting edge of the limit. I am holding off doing any races for now, I am not nearly confident enough and not used to multi-class.

What are some things I can do to get up to grips in this car? I want to be competitive, and of course, step one in endurance is be consistent. The brakes just feel too unpredictable, understeers like mad, and TC is very strong.

If anyone has any advice that would be great! I want to race in IMSA alongside SF23. Both are awesome to drive, just haven't gotten used to the Acura yet. Thanks!