Exactly my friend, this should be something you are working on long before you get ITA. I can't believe people are all worked up about scores reducing, and is caught off gaurdYou were one of the lucky ones that were not even supposed to happen. And it seems it will not happen in the future any time soon (if ever)
Regarding OINP. Last year people had too much hope. So many people were dragging their foot submit their applications. But then July increases were happening and then suddenly OINP was closed and they have only reopened shortly in November.
So they also said that they have no time to wait for indecisive ones. So they went back to their 45 days (as it used to be for paper applications). That still gave applicants few more days (because those 45 days included the time the application package was posted and received by OINP office).
And they also said that now they only want cream of the cream. So their new strategy is to pick people max 10 points below the current ITA score (they surely have enough profiles to pick from).
So yes with your score this year you would have no chance for ITA and no chance for OINP either (unless you were a French speaker).