Put your vehicle model in your sig, so we know what your maximum range is. When time permits, do more reading here to understand how your EV works. This forum is loaded with good info, some of it counter-intuitive. Once you understand how the system works, your anxiety will decrease, but, unlike with an ICE, you will always have to be aware of energy use, kind of like piloting an airplance: fueling has to be carefully planned.
Where are you driving to? If you post this, others in your region will chime in with advice.
If there is significant elevation gain, 200 miles could be reaching your maximum range? Expected wind direction? Pushing a headwind decreases range, especially if you drive 70mph +. These are all things that need to be taken into consideration when driving an EV, when you're in "the middle of nowhere,"
Many here use ABetterRoutePlanner (ABRP). Enter appropriate info into the "settings" area, and it will magically analyze and plan your trip, and calm your anxiety. It will show you travel options, and will also tell you if you should reduce your speed to maximize range.
To maximize range, keep tires at highest acceptable PSI. If possible, stay between 60-65mph. (Always drive downhill, with a tailwind.
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