How thick are the blanks? I am not a stock maker, but do work a little wood. I normally paint the end grain to slow the drying and prevent cracking (wood folks call it checking), then wait a year per inch of thickness before trying to work it. If you know someone with a moisture meter that can measure the dryness of the wood perhaps you can speed that up. My guess is you have several years wait. I date my home made wood, and try to have some drying for use each year.
It is really satisfying to make things from wood you cut yourself!