You'll need to just try weekly carb-ups and see what happens. Some people go anything up to 2, 3, 4 weeks or more.
I tried weekly at first but I wasn't losing so cut it back to 2-weekly and that worked a lot better.
I do quite a bit of cardio - 20 mins moderate/steady after lifting 3 times a week and 3 days of HIIT cardio. (I rest on the other day!) I really struggled for the first 4 weeks or so with my energy for the HIIT and was getting quite disheartened. But this week, something seems to have changed and I'm back to normal - plenty of energy and no more feeling like I need to swap legs with somebody who has spare glucose in their quads