The structure of my document is such that I generally want to have equation number counters both per section and subsection. Problem is I won't be having subsections inside a certain section and that will introduce extra zeros in the equation numbers within that section. I'm currently using the `chngcntr` package:

```
\usepackage{chngcntr}
\counterwithin{equation}{section}
\counterwithin{equation}{subsection}

```

Is there anyway to disable equation number within a certain section?