Organizing two kinds of navigation in a mobile app

The problem:

There are usually 3-4 tabs on a mobile navigation menu, as shown below. This is considered to be best practice. However, we have 5-6 features we would like to display there.

We are trying to design the navigation so we can abide by a simple tab-based format like the one shown above, so we tried to figure out how to organize these major features.

How we're trying to solve the problem:

We decided to use a toggle at the top that switches between "Feature Set 1" and "Feature Set 2." Move the toggle only shows 3 of the features in the tab bar below at a time.

This feels odd and clunky. What is best practice in solving this problem?