I have booked a flight on British Airways flying from London to Philadelphia with a “Visa Packet” (have immigrant visa approval Form I-797)

My flight is booked for April 21. I would like to keep this ticket in hopes Covid-19 restrictions will have been lifted. However, Philadelphia is currently NOT on the list of cities that are accepting travelers arriving on the legal permanent resident visa. ref. https://www.federalregister.gov/documents/2020/03/19/2020-05783/notification-of-arrival-restrictions-applicable-to-flights-carrying-persons-who-have-recently

Is it my best bet to try to change my flight to arrive at one of the approved cities? Should I just keep my fingers crossed and hope restrictions are lifted? As I've already submitted paperwork to end my lease, and my landlord has found a tenant to take over my flat, I will be in a terrible spot affording to find other accommodations as I await a viable alternative to the travel dates I anticipated. Thank you.