Getting your acceptance rescinded is conducted on a case by case basis and from what you wrote, there is no indication anywhere that you would have your acceptance rescinded for getting a couple of Bs. I know someone whose acceptance was rescinded from a UC school but that person just "checked out" senior year and got a few Ds, ending her Sr.year with a 2.1-2.2 GPA something like that. They didn't appeal, they went to another public college closer to their home.
See Also
Will one C ruin my college chances?Can Senioritis Cost You a College Acceptance?Can Colleges Revoke Admission After Acceptance?For Parents: How Do Colleges Decide Who Gets in and Who Doesn’t?Here's an excellent CV article about the subject of rescinding college admissions written by a CV expert. I hope it's useful to you and good luck with your admissions journey.
https://blog.collegevine.com/why-would-a-college-rescind-an-acceptance/
