you dont nessisarly need to change. but think of it this way, Hiit is actually quite brutal if done for long periods of time. It will wear you down eventually, and thats not what you want.

doing a moderate intensity jog for 15 to 20 min twice or thrice a week to keep bodyfat where it is should be a good equilibrium IMO. And it will actually energise you instead of kicking your ass. and at that point you should know your body well enough to tell if you need to step the cardio up, back off on carbs, or take some other measure to keep from gaining fat back again.

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