Crossword Genius

Making some progress and nearly past it (7,2,1,3)

Ross

I believe the answer is:

getting on a bit

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

'nearly past it' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'making some progress and' is the wordplay.
I cannot quite understand how this works, but
'making' could be 'getting' ('get' can be a synonym of 'make') and 'getting' is located in the answer.
'some' could be 'abit' (both can mean a small amount) and 'abit' is found in the answer.
'and' could be 'n' (common abbreviation for 'and') and 'n' is located in the answer.
A single letter 'o' remains which might be clued in a way I don't see.
This explanation may well be incorrect...

Can you help me to learn more?

(Another definition for getting on a bit that I've seen is " Rather old".)

I've seen this clue in The Globe and Mail.
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