Yes, at first you may not have lasting results.
You’ll need to be consistent working with it especially in the beginning which is part of no days off with mobility.
It didn’t take a day to get the way it was so it will take more than one dose to undo it.
Breaking any habit, making changes to technique, making changes to positioning or movement patterns is work.
Keep working with it.
Giving it a morning and afternoon dose will help. It won’t always be this way.
As you are working with it it will move to maintenance work that is needed.