Adjusting the project to django

There is a vps server, the django project is running on it, which, when accessing the server through the browser, makes a sql select request to the postgresql database on another server and returns a response to the browser.
That is, we type 1.2.3.4 into the browser - we get the result of the select query

You need to make a change to the project so that it connects to another mysql database (a database with a similar structure) and executes the same query. It is also necessary to explain to me what and how is changed in the project
That is, to drive 1.2.3.4 into the browser - but get the result of the select query from another database - mysql
The mysql database is already there and is located on the same vps server where the project on django is executed
It is advisable to do before December 31

The work will take place through a remote connection to my PC (teamviewer or some other software for sharing the screen)