Configure AWS Lambda with DocumentDB Access

I need an AWS expert to configure my Lambda function to access DocumentDB and Secrets Manager via a NAT Gateway.

Key tasks include:
- Set up NAT Gateway.
- Configure Lambda to read from DocumentDB.
- Access database credentials from Secrets Manager.

Ideal skills:
- AWS Lambda
- DocumentDB
- Secrets Manager
- NAT Gateway configuration

I have the aws lambda source code. I provisioned both documentdb and a lambda function. I need an expert to fix the network configuration.

I will provide root access to the vpc