DIEP flap bi-pedicle reconstruction

I am due to have a mastectomy next week, and have been given the option of a DIEP bipedicle flap reconstruction.
I ride horses for my sport and hobby and it is an important part of my life.
I have been advised by the plastic surgeon that my stomach muscles will be weakened by the surgery as they cut through them to perform this surgery. My concern is whether I will be strong enough to continue riding after the surgery. If I can ride, even after several months off, then this is ok. It's the long term that i'm concerned about.
Unfortunately the surgeon cannot advise on this, so I was hoping that someone on this group may have had the same procedure done & that they can let me know how they are physically since.
Thank you,
Olivia