At present, Casio's realm is a minor accomplishment, in the second volume, from which it will still take him a while to reach the 66% level of major accomplishment.
He predicts that when the progress bar for Elephant Soul Secret Technique exceeds 66.7%, there is a high probability that the third acceleration node of his blood will be opened. At that point, three blood acceleration nodes will circulate together, and he wouldn't necessarily have to practice himself; the Secret Martial Art will automatically run. Although the practice efficiency certainly won't be as high as actively practicing, the advantage of automatic practice is that he can even become stronger while sleeping.
In fact, he has already realized this to some extent. Since the nodes in his heart and navel have been opened, there is always a faint warmth circulating throughout Casio's body. This also makes the speed of his wound recovery faster, and his blood supply more substantial.
