>>76289175 (OP)Yes it's too much.
You will crash to quickly and even if you keep with it your metabolism will slow down too much that you will still be in a caloric surplus and any weight you lose during this time will come back.
Do a 200-400 calorie deficit and move more, as you lose weight, every 5 or so lbs reduce another 100 calories and increase volume and intensity of exercise.
This will prevent metabolic adaptations preventing you from regaining the weight later on, eventually you will see no more weight loss from this strategy but if you keep increasing activity you can actually eat more and keep losing weight because by exercising more you will increase your metabolism and burn calories just by existing as opposed if you keep cutting calories back your body will desperately try to hold to fat and reduce your metabolism so your energy levels drop, you stop losing fat and even with small meals you gain weight.