sorry
@Ange *******
I mis read and you already say your marriage extension expires on the 27th of Sept (which coincidentally is the same day that the 60 day covid extension program stops 😮 ) That was what caused my confusion and my question.
Just go apply for a 60 day covid extension, you don't need to tell them anything, you don't need to change your address, don't need to cancel anything, just use the exact same address you've used for your marriage extensions, and if they ask why you're getting it say you're not ready to apply for a new marriage extension yet because you need some more paperwork.