Okay, so like, maybe 1,000 calories if we're rounding up? Dude, that's literally less than half of what you should be eating. Even if you're trying to drop fat. This is one of the better step-by-step approaches to setting up a fat loss nutrition plan:
Like Flats said, grabbing breakfast, lunch, and dinner everyday is the cornerstone. For sure, a lot of people get good results eating every three hours, but it's not necessary. And in your case, it might be more of an issue (for schedule, planning, not missing a meal, etc.).
I tried looking around there and it seems like there are a bunch of different 5-day splits, some better designed than others. I'd consider one of these programs instead, just to make sure your training is optimal:
Good call, but switch the cardio to right after the weights to avoid sapping strength and performance from the weight work. Also, keeping it at one mile is fine, but try to finish the mile a little faster each week, even if it's only a few seconds faster. That kind of progress of pushing the time/speed instead of the distance will boost the intensity and overall fat loss effect.
Super common situation with an under-appreciated solution: Weekly meal prep.
Dan John once said something along the lines of, when you're trying to lose fat, it's worth spending two "gym days" and, instead of hitting the gym for an hour, go food shopping and then cook stuff in big batches so your kitchen is plenty-stocked with all the right food.