I recently submitted an article. After review process, I added all suggested changes to the article and now it is longer than formatting restrictions allow.

It is a conference article and any extra pages are charged. That extra page contains only some references. My question concerns the extent to which I can modify my article after receiving review. I am not talking about results or conclusion or any other major topic related changes, only e.g. grammar, style, figure location, text and section rearrangement, layout, etc.).

Can I remove some of the suggestions of reviewers? To what extent are any other (non-required) changes acceptable and/or permitted?