Wedding was supposed to be 4/3/20 - legally married

I think you can definitely still do your ceremony etc. is your postponed wedding still going to be in Mexico? if so i would proceed as planned

You can absolutely still plan a wedding celebration Alexa!! Tons of couples whose weddings have been affected by Covid-19 are doing just that - getting legally married in a private or intimate ceremony now, and planning a unity ceremony or vow renewal with their postponed reception later!

Here's a few other discussions where you can see how other couples are switching up their plans in the midst of all this craziness: What has covid changed in your wedding plans?, Stupid covid, Hardest Decision, and Already Married, Planning Wedding Still.