I agree with this comment.

I've been on a calorie deficit of 400 for months now and I feel fine. Lost 10 pounds and am pleatueau-ing at 145.

I also work out so my diet is very protein heavy and light on carbs. I don't feel full after meals, but I also don't feel really hungry.

Don't go on an unsustainable calorie deficit. Accept that it'll take time.