Thank you, 250 Fahrenheit, I already added 4 oz whole milk. Hopefully it will help. I'll check it again in 20 min. Just checked it, it is almost done, going to check again in 20 min, should be done.Add just a little boiled (distilled/rain) water to help it melt ... if it's crumbly, the soap might need the extra moisture to kick off the melting (also, with a loose cover you'll lose moisture, so adding some will be beneficial).
Also, what temperature is it melting at?