My non-immigrant O spousal visa expires on the 17th April. Couple areas I was looking for advice:

1) What is the earliest and latest date I should apply for my renewal / extension?

2) I know I have to keep 400k seasoning in my bank for 3-months. Could that be in GBP in a Thai Bank account or does it need to be THB? Can I hold term deposits, funds or stocks in a Thai account or does it need to just be cash?

3) Does the cash have to season for 3-months from the date my current visa expires or 3-months prior to my date of application?

TIA

I come to Thailand on a non o visa based on marriage obtained in my home country. Due to quarantine in hotel in Bangkok and village I have not had time to let the 400,000 baht season for 2 months. What would be the best way to get a bit more time to allow for the money to season in my Thai bank? Covid extension or can I just extend it another way? I will need at least another 30 to 40 days. Thank you