I have two personal statement, because I am applying to different majors for different schools. Is there a restriction on changing my personal statement after I submit it to the first university?
I’m assuming you’re using common app, so no. After you submit your application for one university, you can go back and edit your essay before submitting the application to the next university.
I am not sure about this year, but in past year you could only change it once or twice so be very careful. I’d try the help sections of the Common App site, but iirc it is pretty bad.
When I submitted my application two years ago, I somewhat recall the limit was three. In some ways it is meant to prevent everyone from changing each personal statement for every university you apply to, but you should be fine as you are careful it says what you want to say before submitting. The main essay is meant to be a general essay anyway, so it does not necessarily have to reflect a certain major and could actually help establish that you have different interests