Liquid diets and weight gain?

About 11 days ago i had 3 teeth pulled. Two left back molars side by side and 1 bottom left wisdom tooth. So there is about a 4 to 6 inch gap in my upper jaw. One tooth had to be broken in pieces in order to be removed. Healing is going well, but there is still a fairly big hole in the top and still a small hole where the wisdom tooth was. I am fanatical about brushing and rinsing after every meal and snack so no food particles with get inside. Up until about 3 days ago i was on a total liquid diet consisting of Special K protein drinks, V8 and broth or cream type soups. I was barely taking in 1000 calories a day. As of this morning i have lost 14 lbs. Which didn't seem so bad considering that i was nearly 25 lbs overweight. But then i keep reading about how sudden weight loss and dramatic drop in calories can almost halt your metabolism, so now i'm a little worried. So i have been trying to incorporate semi solids a little at a time over the past 3 days, gradually adding about 100 extra calories per day. Today it was about 1350. My question is, how many calories do i need to maintain my metabolism without crashing. I also have a fatty liver and i know that sudden weight loss can have adverse reactions with this condition also. So how can i get enough calories when my food choices are so limited. My dentist said it could take up to 3 to 4 weeks to go back to a normal diet. Even then i have to be careful not to get anything hard in the extraction site. That could bean additional 6 to 8 weeks.