Thanks.
The procedure for the Non O application can be downloaded here;
https://bangkok.immigration.go.th/wp-content/uploads/2022C1_09.pdf
The main points are that you must have at least 15 days permission of stay remaining from the 60 days permitted on entry.
I recommend you apply circa 20th November.
The 800K funds are only required to be in a Savings or Fixed term account in your sole name on the date of submitting the application. (no seasoning period for the Non O required).
Updated passbook, bank statement and standard bank letter addressed to Immigration on the day of submission.
Documents;
Completed form TM87 (Attached) Printed both sides on one A4 sheet.
Passport.
Passport photo, 4 x 6 cm.
Copy of passport data page
Copy of entry stamp
Original TM30 receipt (stapled in back of passport).
Copy of TM30 receipt
Signed copy of houseowners Blue book (address page and householder personal details)
Signed copy of householders ID card
Copy of Chanute (not always requested)
It's a two part process.
Non O applications are not approved on the same day as submitting the application, they must be approved at regional level.
You'll be notified to return within 14 days for the Non O stamp, and you'll be granted a further permission of stay for an additional 90 days, which should be dated from your current permission of stay (20th December).
Any questions so far?