Is it acceptable to have just one client for a visa application in Thailand?

I have only one client and have been earning over 2k, with payments deposited directly into my account. I also have the invoices.

I’ve been getting paid by this client since March 2025, and I’ll have over 500k Bhat accumulated for the past three months.

I want to know if that’s acceptable, or if they require multiple clients.

Has anyone been approved with just one current client?

I’ll be applying from Hanoi, sometimes in November.

In this case, what is better:

1/ A freelancer

2/ A remote worker.