Can I extend my stay in Thailand on a non-immigrant Spouse Visa after my partner's work permit is canceled?

Hi , I have a type O non-immigrant Spouse VISA for one year. My partner is going to resign her job on Nov 30th. I understand that my dependent VISA will be cancelled after her work permit is cancelled. However I need to stay in Thailand for another 2 months due to personal reason. In this case , (1) when work permit is cancelled , is there a way for to extend my stay in Thailand for another two months ? (2) Covid extension visa is only till 26th Nov. So is it possible for me to give up my type O stay permit earlier before 26th Nov and apply for Covid Extension ? My partner still needs to work till Nov 30th and cannot give up earlier.

Thanks you and looking forward to your kind advice and experience.