Hi sallyg
I'm not a trucker but I have done my share of long distance drives & I know the challanges they create especially when you are trying to eat healthy! But there are some tips I can give you that may help!
Get a nice cooler like a Yeti, yes they are pricier but they will keep food colder for much longer! And they have some very compact model's. Then all you'll need is a couple of those small hard refreezeable ice things! (More room for food).
Plan for each haul!!! Boil & peel a dozen eggs, buy some cheese & counter deli meat & pack that cooler for when you feel hungry!
Count your carbs & keep them as low as you can! Packaged/processed foods will hide carbs a lot so be really careful which ones you choose!
If you stay away from foods that have any
sugar in them your cravings will be much lower (& so will your carbs)! So read lables!!! (If the lables have words you don't know put it back on the shelf!)
Bacon & fried eggs can be your best friend (I eat them daily) good fat & protein content (no toast or hashbrowns sorry). I know all truck stops make them! (A ham & cheese omelet ((just go easy on the onions & green peppers have more carbs than you think)) or scrambled eggs w/cheese are also good!).
Make sure you get enough healthy fat...so real butter, heavy cream in your coffee & higher fat meats are a plus & fats will keep you full longer. (You can add coconut oil to your coffee along with heavy cream). Add butter on top of a steak or chicken breast! But carry your own butter as only the most fancy restaurants serve real butter! (Most cuts of steak & chicken breast don't have a high far content & animal fat is your friend when eating LC).
Once you've been eating low carb for a bit you may find that you are not hungry & that 10 or 12 hour driving stretch you may not even need to eat! Or maybe even a good time for intermittent fasting. I fast daily for 12+ hours from my dinner until my first meal of the next day & I only eat 2 time a day. You may even find that eating once a day works for you so you could get your driving in & then stop to eat!
The cool thing with LC way of eating/living is you eat when you're hungry & don't eat when your not hungry. So you can make eating fit your schedule.
Also drink enough water! If you can cut out juice & diet soda & only drink water! Morning coffee or tea is cool but the other drinks are not your best choices.
Oh yea...adding some good sea salt 1/2 tsp to 8oz daily will keep your salt level good as eating LC can deplete it. Plus if you get the "induction flu" or "Atkins flu" (usually in the first 2 weeks of starting LC eating) salt water will help ease those symptoms a lot!
I hope this is some help
Best of luck on your new way of eating for life & on all your trips!!!