Good call, I'd wait a while to let him resume normal activity before another shake-up. That shouldn't take long. But be aware that you might not have prevented him from swallowing a hazardous volume of substrate so keep an eye on his behavior and seek medical help in the event that he doesn't resume normal feeding soon.

I will say that I've never had a Toad with an impacted bowel so if others here have direct experience with this problem it would be helpful to hear from them right away, in the event you have to deal with that hardship.