What are the current requirements for a 60-day extension based on having a Thai child at Chiang Rai Immigration?

Chiang Rai Immigration

Had my 60 days extension based on having a thai child for the Non-O - 90 days visa today. Apparently, there was a 300 baht service charge (without receipt) for transferring the entry stamp from the old passport to the new passport then they will proceed with putting the extension stamp. Copies of entry stamp + departure card, old passport particulars + new passport particulars & Original letter from the embassy stating the issuance of the new passport + a photocopy of it.

Nothing much changed for the documents required for the 60 days extension based on thai child.

Copy of Child Birth Cert + Tabien Baan

Copy of ID + Tabien Baan of the Child's mother

Photocopy of Visa Page, Entry Stamp, Departure Card

Filled-up forms (3 pages of them - can be collected on site)

TM.30

1900 baht

They will not be opened tomorrow. They only replied with a smile when I asked them if Monday is still alright to process without being overstay. (As good as no answer)