It has nothing to do with how many days you've been in the country since you arrive. And it has nothing to do with your initial 90-day non-ed Visa.
When you go apply for your very first extension of stay on this ed visa most immigration offices will staple a small paper in your passport that tells you when your first 90-day report is due.
You don't report or do anything until you get that paper.
So when you go for your first extension look to see if they gave you the paper showing when your first 90 day report is due or ask them..
For standard (Non-O, Non-B, Non-ED) visas the processing is usually between three and five working days.
It is totally dependent on how thoroughly you fill out the application and if they need to send you an email requesting additional documentation. <-which makes the processing time longer
Go slow, get it right, it's not a race, check your data that is entered very carefully and make sure you upload what they ask for in the appropriate fields.
And on the chance you're not over 50 and wouldn't qualify for the retirement visa/extension you would have to find an alternate way to stay should you decide to stay here a year.
There's no problem getting the nano based on having a Thai child coming in and getting the 90 days and staying the full 90 days that Visa allows, you just couldn't extend it
You would leave the country and get the non-b visa based on employment, and you are no longer in Thailand on the Elite visa but the time that it is valid for still keeps running down.
It is one of the few visas that you're allowed to continue to have while you also have another valid visa based on employment.
Once your job ends you cancel the non b visa/extension exit the country re-enter showing your Elite visa and get stamped back in on it no problem.
on the up side at least you will check your stamps before you wander away from passport control ๐
Remember people PRINT out the PDF they emailed you when your visa was approved because that IS your visa (whether they can see it on the screen or not)
AND
Check your stamp before walking away from the counter at passport control.
Keep in mind immigration offices are NOT obligated to correct a bad entry stamp <- they can and many times do send you to the point of entry.
Just had a guy entered at Sa Dao border from Malaysia, didn't pay attention got stamped in for 60 days, then noticed it 3 weeks later in Chiang Mai ๐ฎ
He went to the C/M office and they said go back to the Malay border or just bounce out/back when this stamp runs out, he bounced out/back showed his DTV when he flew back in and got a new 180 day..