Completely raw material is one thing. Semi-processed is another. But stuff ready-to-go? I gather they aren't there yet.
IIRC you just keep going with the centrifuge enrichment process, if you don’t have a heavy water reactor to speed things up. Isn’t that what the Russian heavy water reactor is for? The final steps for making plutonium, a much more powerful bomb than one made from enriched Uranium.
Bomb reactor first, best plan.