Have you seen a doctor about your hip joint?
What are you doing to start
Sounds like you have a lot going on.
Spine first.
The spine is the carriage or chasse for the primary engines of the shoulder and hip.
Disorganized at the pelvis hip function is decreased.
Changing the position is the way to improve the function.
Some of the things you are experiencing are downstream issues of the hip.
When you are in a good position your body turns on.
When your body is in a poor position it does not turn on.
This is some of what you are experiencing when things go away and come back.
Standing perfectly and your experience is improved.
You are not holding adjustments because they are not hitting the cause of the problem.
Sounds like you need to re construct your sitting position if this is the trigger.

A good place to start is episode 1.
You have several things going on and going through episode by episode gives you exposure to the videos as they were added and each concept as it was added during the Year of Mobility Project. Piece by piece start chipping away at.
Getting started is key.