Azure Python Function Retry Limitting not Working in Logic Apps

I've tried two methods to limit the retries of a "failed" function and neither have worked (described below). I'm developmentally challenged, so any and all help would be appreciated.

The context: the function is placed in a logic app, which is triggered by an email, after the email attachment is saved to blob. After the file is saved, the function performs successfully but the logic app returns "BadRequest. Http request failed: the server did not respond within the timeout limit" after a run-time of 2-3 minutes. Then the logic app retries the function 4 additional times.

Method 1: I placed retry into the host.json:

{
  "version": "2.0",
  "logging": {
    "applicationInsights": {
      "samplingSettings": {
        "isEnabled": true,
        "excludedTypes": "Request"
      }
    }
  },
  "extensionBundle": {
    "id": "Microsoft.Azure.Functions.ExtensionBundle",
    "version": "[1.*, 2.0.0)"
  },
  "retry": {
    "strategy": "fixedDelay",
    "maxRetryCount": 0,
    "delayInterval": "00:00:05"
  }
}

Methods 2: I placed the same snippet into the function.json:

{
  "scriptFile": "__init__.py",
  "bindings": [
    {
      "authLevel": "anonymous",
      "type": "httpTrigger",
      "direction": "in",
      "name": "req",
      "methods": [
        "get",
        "post"
      ]
    },
    {
      "type": "http",
      "direction": "out",
      "name": "$return"
    }
  ],
  "retry": {
    "strategy": "fixedDelay",
    "maxRetryCount": 0,
    "delayInterval": "00:00:10"
}
}