They want to see that the company you work for allows you to work remotely from Thailand. They also want to see that you will not interact with any thai entity
I guess you're actually on an extension of stay. If so and you don't have a re-entry permit it will automatically be cancelled when you stamp out of Thailand. If you have a work permit cancel that first.
Anonymous participant the Chicago consulate quotes a 15 working days processing time so you've a bit to wait yet. It also only allows applications from certain states.