There are some things that drummers overlook practicing.
Most would agree that odd note groupings are among them.

All great drummers have practiced and incorporated these into their playing.
Play these slowly with a metronome, and try not to get too frustrated...
there's always tomorrow!

Here is a set of osinatos that you will play on each limb.
Sub out one of these parts and add an exercise from above:

If you played the exercise on the snare, this is what it would look like: