Down 30 pounds in 30 days. Is it reasonable to assume i can keep losing weight at this pace.  Long story short I have started a diet of extreme calorie and carb reduction. So far in the past month or so i have lost 30lbs I am wondering if i can keep up this pace or am i going to hit a wall or hurt my self in a meaningful way. 

I started at 260lbs now at 230lbs i am 6'1'' male shooting for an ideal weight of 150lbs. 

Mostly my diet is less than 30 carbohydrates a day and sub 1000 calories a day. On top of exercise of about 2 hours a day though i might be increasing the length of my workouts. 

Any insight would be great. 