I don't think it is; in books where you get a Yeerk's POV, something along these lines is commonly stated, "...I felt my neurons attaching to the host's neurons..."
So, unless you plan to sever ties between billions of individual neurons, which are cells, you cannot really do this. I don't even think this is possible. Even if you could, it would not be "natural" and the ties may not reconnect to the functions of the host's brain, which could cause disability or death.
I'd wait three days. If I had the oatmeal problem, well, I guess I'd just have to deal with randomly spazzing out every so often.