Program for beyond stretch series

So been at it for a while now and making great progress.

My question is once one is getting pretty happy with mobility levels is there a weekly  maintenance program or suggestion to do to maintain the desierd Level?  (I’m not there yet). 

Do we ever graduate and practice or are we to always be training it?

Do we just stay on the program for ever always making or striving for gains?

I do enjoy doing the series and is my time to focus and be active and mobile.   But perhaps in the future there is a less time consuming and intense program to maintain or even make little more gains slowly. 

Thank You!

In the end, all you really will need to do is maintain the splits. Keeping other exercises like the calf raises wouldn't be a bad idea either but once you master a split or bridge series it shouldn't be tough to keep them. That's the beauty of mobility/flexibility gains. Once you put in the time and earn them, they are tough to lose because maintenance requires so little time or effort.