@Wade ***
you'd have to meet the seasoning requirements to get the year marriage extension (400K baht in a thai bank account in your name only for 2 months before you apply) there's no leeway on that.
As
@John *********
stated IF you haven't gotten the 60 day visit thai family extension since you last entered thailand (as you can only get it ONCE per entry) you could use that.
AND
Keep in mind, you can totally FLY out like to cambodia use a thai consulate there get a new visa and fly back in as long as you meet the entry requirements for cambodia and thailand comin back
Only land borders are closed.