They are going to make you change, unless you can come up with a reason to pupil place and they approve it. My kids don't want to move is not a reason. They will probably let you finish this school year though.
https://www.fcps.edu/registration/student-transfers
Basically, childcare, FCPS employee, going into their last year of ES (but only for the kid it applies to), and medical, psychological reasons are reasons you can request pupil placement. The medical psychological reasons have to be real, ongoing, documentsed and in treatment though. Not My kid wants, or My kid would be happier if.