It is time to check that your cello end-pin height is adjusted properly.
As you become more experienced playing your cello, you may find that minor end-pin adjustments may help to increase your playing comfort and performance competency.
While remembering all that you have learned about specific physical contact locations, please carry out this checklist:
C-PEG NEAR LEFT EAR
UPPER-RIM BY STERNUM
KNEES BY LOWER-BOUTS
PERFECT POSTURE
If the areas listed are not lining up, adjust the end-pin to make them all work together for you!
Repeat the Cello Playing-Position exercise, gaining more confidence each time.