F-1 Withdrawal: Marriage based Green Card

Hello, I have applied for Marriage Based Green Card. EAD and Advance payroll have been already approved and received it few weeks back. Currently I am working using the EAD Card. I-485 was scheduled for interview in March but has been canceled due to COVID-19 Pandemic. Now I asked my University if I can withdraw my F-1 Status. They are saying I must maintain my F-1 status. This is my 3rd semester in the University and asking me to pay for $6000 as the next semester fees. Due to this current situation and considering the financial stress me and my wife are discussing to withdraw classes from the University. I am seeking for advice about this withdrawal, whether it will be a good decision or not? If I withdraw will there be any effect on my I-485 interview? Also do I need to change my Visa to any other visa like K-1/fiancé visa? Thank you.