Archery, like any activity or skill that requires hand/eye coordination, is only mastered by continuous repetition of proper shooting mechanics.
Going by this, if it takes you thousands of shots to ingrain your anchor point into your muscle memory so that you can execute it flawlessly without thinking about it, then any change you make will require the same thing.
Whenever I changed an anchor point, or any other shooting technique, I always tried to do it just after bowseason ended, so that I'd have the better part of a year to work with it.
I admit that I'm...shall we say "fanantical"...about archery, and I shoot 10,000 to 12,000 practice arrows a year. But it's more because I love it, rather than my being so personally disciplined, but the results are still the same! It works!
Offer No Apologies.....
NRA Endowment Life Member