Need to get faster on the run...

You don't need intervals.  You need miles.  The three key elements of running are (in no particular order): frequency, consistency, listening to your body.

You've run about 21 miles in the whole month of February.  That should be less than a week.  Until you are running 25+ mpw consistently, you're not going to really see any long-term improvements that you want.

Your pace should be easy.  I mean EASY.  Breathing is your key.  If your struggling to breath, you're running too hard.  No one gives a rat's behind what pace you run in training.  The one that matters is race day.  Don't worry about tempo runs until you get your consistency and frequency up.  Run 4 times a week.  Every week.  One of those should be longer, about 1/4-1/3 of your weekly distance.  Run one of the runs (not the long one) a little (but not much) harder than the others.  Build your weekly mileage up, add about 2-3 miles a week or every other week.  Do that for about 3-4 months consistently, and you should start to see some gains in your running.