So as adviced, get off OW for at least a few months.
Also you cannot claim OW for the 3 years after the PA becomes PR.
Now, this is a tricky situation. If you show your income to IRCC to proof that you can support your partner as a sponsor, then you are showing income that I believe that you didn't report.
But if you don't, IRCC may have doubt on how you can support your family.
It's up to you, I think. good luck.