20 days to achieve Finnair Platinum

Hello.

I am 2241 tier points short of the 80,000 required for Finnair Platinum. Tracking period ends September 30th.

If I was in Ireland, I would just need a €280 Finnair flight to get me over the line.

But I am in Japan until after the tracking period ends. So a Finnair flight is not an option.

So I need to fly JAL.

I am inexperienced with this stuff and I am struggling to find the right way to get the remaining points, but also being sure enough that what I do (codeshares/multipliers) is correct.

I don’t see any straight forward international flights I can do that help. A return trip to Seoul isn’t far enough. Taiwan is too expensive.

With work I don’t really have anything more than 2 x 1 days to get it done, and I am trying to see how I can best do this domestically.

Does anyone have experience or advice for the best way for me to proceed?

Thank you.