>>12048300to have 2nd order thoughts about 1st order thoughts, you have to spend the cognitive energy you could have spent on 1st order thoughts on 2nd order thoughts. This means that the maximum time spent on 2nd order thoughts would be 12 hours per 24 hours. For 3rd order thoughts, this would be 8 hours. 4th order thoughts 6 hours, etc.
I can quickly see having additional non-1st order thoughts having diminishing returns. In the limit, you'll only have 1 1st order thought per day. Or you could have 1 1st order thought every week, etc. Very high consciousness would essentially mean that you have almost no connection to practical reality anymore