What are the best options for applying for a DTV visa from Thailand if I can't provide 3 months of bank statements?

Hello to everyone. I hope you can recommend me to find the best option for me in my situation. Thank you very much in advance...

I'm currently in Thailand and planning to leave the country in order to apply for the DTV visa. I'm self-employed in Spain and can show a bank account with regular income and a high current balance.

However, I see that the application might require bank statements from the past 3 months, and that's a problem for me, because in May I made a large investment in Spain that temporarily reduced my funds (I wasn’t planning to be applying for the DTV visa at that time).

Is there any country where they only will check the current balance and not the last 3 months? Or do I have no other option but to wait until 3 full months have passed?

I'm flying to Japan in 2 weeks, but I don't think it's the best place to apply.

Would it be better to go to Laos, Vietnam, or Malaysia, etc after Japan, before returning to Thailand (ideally already with my DTV)?

Thanks so much for your time and help!!