Chin bunching against prodruging top lip

[Kalkreiniger]

Hello BE family,

i started changing my chin to a maximum bunched chin when i practice, for 4-5 months.

I noticed that it saves mit top lip from pressure.

But now i have a new problem after a few minutes my chin and corners hurt very much. Also a noticed that my top lip is not used to hold the pressure when i have very long gigs.

What do you think should i go on? Is there anyone who has experience with this problem?

Thank you from austria