@Tomasz *********
I think you're getting a bit confused.
If you are within the initial 90 day entry stamp of your non-o visa, and as Steve has mentioned, have thai dependant relatives, you can apply for a 60 day family extension.
If you are currently on said 60 day family extension, normally your only choice would be to apply for a year long extension OR leaving the country (border hop perhaps).
Right now is not normal, and so you have another option. If you cannot travel back to your country you can apply for a 60 day extension based on not being able to travel.