F1 to H4 cos withdraw

My father is on H1-B. I am 19, I am in 4th semester of my college. my F1 approved on January 2020.But because of some reasons I have applied COS F1 to H4 last July. Still not approved. I want to continue on F1 and withdraw my petition. Our 485 is in processing stage.This text will be hiddenIS there any problem in that?