Timing your maintenance:

When you feel you are sinking back into yourself
Neck begins to shorten
You feel a bit shortened all over
You feel gravity is taking over (that heavy feeling)
Small aches and pains you cannot alleviate on your own

Then you can continue:
To keep advancing your structure
To continue on your spiritual journey (some people come for this)
every 3 to 5 months unless there is an ongoing issue
In which to continue work for a bit (especially if there is a chronic issue)
There is a 3 series or 5 series available
Ultimately:
advanced work (If you can you sit in a ‘z’ position for 10 minutes)
Other things to consider:
Prior to surgery
At some point after surgery
After a new injury and before compensation happen

Scar work:
New
After surgery and the scar is not red and there is enough time for deep healing
Burns, road rash, major or minor scarring
You would be surprised what scars can hand on to
Advanced Rolf Practitioner / Structural Integration