How to create many new fields on DB

I’m building a DB, and I have many fields. Manually, I have to create these fields in the DB one by one. This is taking me very long.

I have about 324 fields to create. Is there a way to create these fields faster?

Here is a recent thread asking the same question, and sorry, but the short answer is no.

As far as I know, there is none from Bubble.
The workaround could be, have your custom browser-extension that will parse your json-config and repeat this step once you initiate the process:
click on the Create new field button, fill the form, choose the datatype and hit ok.