Prev Next as substitution for dropdown navigation. Bad UX?

I'm wondering if this would be bad UX and if so what are good alternatives.

Here's the layout:

A Services link in the main navigation that takes you to a main "Services" page. That main services page has links to the 6 services pages. Within those individual services pages there's prev and next buttons at the bottom of the copy to get to the rest of the services pages. The only way the user can skip around services pages without following the linear path of previous and next is by going back to the main services page or clicking links to the other services pages in the footer.

Unfortunately there are no dropdowns in the main navigation, which would solve all issues.