You are talking about something different to the OP as you already have your Non-O. Two months before and 3 months after are not the requirements for the initial Non-O Visa, that is for the 12 month Extension of Stay. Seasoning for the initial Non-O is required in Jomtien and a very small number of other Immigration Offices.
You really should have thought this out and got your Non-O before you travelled which would have allowed you to open a bank account for the transfer in time to season for the 12 month extension application.
Yes, really. Only Jomtien and a couple of other offices require 2 month seasoned funds for a retirement Non-O, the norm is 800k on the day of application.