Hi @Faez, sorry to hear about your COVID situation. Hope you and family are OK.
CFA Institute normally does not allow changing exam dates BETWEEN exam cycles (e.g. May21 to Aug21), but I think you may qualify for a deferral which is assessed on a case-by-case basis.
See this article on CFAI’s rescheduling policy for more info, and reach out to CFA Institute ASAP on this. If you have proof/documentation of getting COVID within 60 days of your exam date, you would probably be allowed a deferral, but this is totally up to CFA Institute.
Let me know how this goes, I hope you get well soon.