Token Expiration for PKCE flow(used in auth0-js-spa SDK)

We are using the PKCE flow(used in auth0-js-spa SDK) in our front-end application. The token for the protected api is fetched via the token endpoint.

Refering to link Update Access Token Lifetime (auth0.com), if we reduce the Token Expiration would it also effect the expiration time for M2M tokens?

If yes, then what is the best way to reduce the expiration for token issued via the PKCE flow(front-channel) without impacting the expiration for M2M tokens(which is coupled to M2M quota)?