@GayleS03 the requirement for "more than 50% support", is generally interpreted as more than 50% of the usual & necessary living expenses of the person in question.
Since you became a resident --- this would be the day you were admitted into the USA as a Resident ( assuming that you had not been in the USA ( for any reason ) during the last two years ( 2021 and 2022 )..
So I would count your expenses only from the day you were admitted in to the USA. Prior to that date you were not a US person ( and for US purposes did not exist ).
That is my opinion .
Is there more I can do for you ?
