today is my first day connecting RDS to VScode via MSSQL but i keep hitting ETIMEDOUTERROR

This is the structure of my connnection:
Review JSON Syntax
{
“mysqlOptions”: {
“authProtocol”: “default”,
“enableSsl”: “Disabled”
},
“previewLimit”: 50,
“server”: “demodb.xyzabc-2.rds.amazonaws.com”,
“port”: 3306,
“driver”: “MySQL”,
“name”: “myfirstdb”,
“database”: “demodb”,
“username”: “admin”,
“connectionTimeout”: 0,
“askForPassword”: true
}

and this is my inbound rule setting from RDS
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and this is outbound rule
enter image description here