Can I apply for a guardian visa to stay with my son in Thailand after my visa expires?

The user is inquiring about applying for a visa to stay in Thailand with their son, who holds a student visa. They need to know about the documentation required for applying for a Guardian Visa and express concerns about not meeting the financial requirements of having 500,000 baht in a Thai bank account for the necessary duration before applying. Comments suggest contacting the school for documentation and highlight the financial prerequisites for the guardian visa.