have you tried it recently? It's a Thai banking requirement, that over 50kthb or 200kthb in 24 hours requires face ID on transfer on an app, the pictures needs to be done at the bank.
this is getting boring, my government pension is 13 times a year and is not enough, my private pension can be paid every 3, 6, and 12 months. So unless I take the lump sum and then send an additional monthly payment it won't work, not only that it will be more effort and cost and more explaining at the immigration office, not very appealing.
when I spoke to my immigration office, they said wanted to see documents demonstrating the origin of the funds, they well may accept income as you describe, they said there checking for money laundering, but bear in mind they have there own view on what they want.