Anonymous participant You can apply via the freelance invoices you have. Taipei embassy who I applied with last Dec, would not accept my new contract starting in Jan. They said they need to see payments from that contract, so I applied with previous freelance contracts.
If you have just started working remotely then you detail that. Approvals have been given for those recently employed, There is no minimum income requirement, inconsistent income is part of working freelance so it is not an issue to show irregular payments, Key financial is the 500K THB, if you have more in savings show that to strengthen your application,
You do need to write a letter giving yourself permission to work remotely in Thailand and not engage in any Thai business activity. Tax returns can be requested depending on where you apply. The Workcation option is the best option if you qualify.
Congrats on your DTV! Very useful info for the DTV and travel within Laos. KokKok Move is a great idea for ordering TukTuks, not heard of that before,.