There really isn't a way to speed up curing. There has been discussions in the past and the general consensus is an oven, dehumidifier, dehydrator and fans don't work.
However, soap is safe to use within a short time after making it. It just needs to be fully saponified but it won't be at its best. The curing time allows for excess water to evaporate, the soap to become milder and the lather to improve. Just keep in mind it will be better in a few weeks if you have to try a bar. BTW, I understand your impatience - I've been there. :wink:
This is just a suggestion - slice a little off instead of using a bar. Sometimes I don't clean up right away. I put the bowl and utensils in a bucket with a snap on lid. After saponification, I scrape out the remainder and put it into a container. I use the scraps to test if I'm impatient to find out how the recipe turned out. If I'm not impatient, I save the scraps, put them in an organza bag with other scraps and use it in the shower.