Setting up terraform, lambda, secrets manager to rotate existing RDS & application secrets

Need help with aws secrets manager rotating lambda and terraform setup for my company environment. I have most of the function setup but having trouble passing values through lambda to get the function to rotate. I have existing secrets in my environment but not able to rotate with a lambda rotation function. We need to rotate database rds secrets as well as application secrets. https://aws.amazon.com/blogs/security/rotate-amazon-rds-database-credentials-automatically-with-aws-secrets-manager/ Are you familiar with terraform? If so, creating this rotation in terraform it will be better. Please let me know if you are capable of this project.

Deliverables
Lambda function rotating existing RDS and Application secrets in AWS
Terraform module setup to keep it automated