Lazy, don't move around so much (9)

I believe the answer is:

shiftless

I'm a little stuck... Click here to teach me more about this clue!

'lazy' is the definition.
(synonyms)

'move around so much' is the wordplay.
'move around' becomes 'shift' (synonyms).
'so much' becomes 'less' (I can't explain this - if you can you should believe this answer much more).
'shift'+'less'='SHIFTLESS'

'don't' is the link.
I am not very happy about this link. It may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for shiftless that I've seen before include "lacking in initiative" , "Lazy - indolent" , "Like an automatic American car" , "Idle" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.