Would not eating diner be healthy?

I started a diet a little over one week ago and have lost almost 13lbs I have also been exercising 4 times per day for a half hour each. Before I started my diet I would eat around 2500 calories a day and I'm a pretty big guy (6'3" 232lbs at the moment) but now I'm on my diet I eat 3 small means breakfast, lunch and diner (about 1500 calories) now I've recently noticed I'm not even hungry around diner and I think Its due to the fact my stomach Is getting smaller from eating less food. So would not eating diner be healthy.