Hello, I submitted a DTV visa and i'm reading that not all embassies accept a family member like a mother as a sponsor.

I'm applying to Madrid embassy and I have spanish passport. Do you guys know if this is true?

There are so much confusing info, like some people say I need to submit a 6mo statement, which means I need to have the 500k for long time to make sure it is not a single loan, and other say that adding those 500k one time is enough.

That's why my mother is sponsoring me, do you guys have any idea about it?

also, do you know how much time can I expect to have the approval?

Thanks for your help!!