Cognito doesn't support refresh token rotation. By increasing expiry time of refreshtoken we can extend the amount of time before the user needs to fully login again to obtain a new refresh token. I did found a 3rd party article regarding how to use the refresh token. 
Regarding the feature request, I would recommend opening up a case with the AWS Support Team & work with them directly.
are federated IDPs consulted on token refresh via cognito user pools?Accepted Answerasked 6 months ago
What does the Cognito Logout endpoint (/logout) actually do?
Cognito: Key Rotationasked 7 months ago
Cognito refresh token won't work.asked 3 years ago
Cognito does not support the rotation of refresh tokens?asked 9 days ago
adminitiateauth and refresh tokensasked 4 years ago
Does Cognito's RevokeToken API call invalidate Access Tokens and/or Id Tokens and/or Refresh Tokens?
Why do Cognito access tokens not have an audience claim?asked 2 months ago
Rotation of bitnami Apache log filesasked 2 years ago
Lambda triggers for Cognito User Pools refresh token?Accepted Answerasked 5 years ago