Who qualifies
With certain exceptions, to qualify for OHIP, you must meet all of the minimum qualifications listed below plus at least 1 of the additional requirements.
To meet the minimum qualifications you must:
be physically in Ontario for 153 days in any 12‑month period
be physically in...
It depends on a decision maker. Most often you get an update and/or a decision on your reconsideration request. Sometimes IRCC just reopens your application and makes a decision again. Not always a positive one.
No, you don't need to to update your proof of funds. But there's a slight chance that IRCC might request an updated proof of funds, just be prepared.
No action required from you now if not requested by IRCC.
You can disclose only the work experience you claim points for to avoid providing references for that.
But eventually you will need to mention everyone in your personal history.