Why did Poland decide to demand concrete reparations from Germany right now? [duplicate]

According to this Reuters article, Poland is demanding approximately $1.3 trillion in reparations from Germany. If it wasn't Reuters, I would think this is just what many here call "Russian propaganda".

Other then in this question I am not asking about the reasons for demanding reparations, but about the time this demand has been made.
I personally can't think of a less suitable moment for such demands. All NATO and EU countries including Germany are now united in their solidarity towards Eastern European countries like Poland, but at the same time, Poland making that demand is definitely not good for its relations with Germany. By solidarity I mean West European countries including German moving their troops and military equipment to Eastern European countries.

Why now? Why has Poland not made this demand a year or more ago? Or why not wait at least until the current conflict is over to make this demand?

While the government of Poland have mentioned that they want to demand reparations before, this seems to be the first time they demanding explicitly some amount of money. Is it just bad timing?