Glad that Squattogether has selected a new life style of thinking, training and a different eating pattern to follow. As far as that 4 letter word 'diet' goes, there are other options rather than the lower calorie method. While not getting the calorie needs for basic maintenance (2000 is around what the average sedentary man may require, much less for BB'ers who want to gain...or even hold on to his present muscle size, when losing fat) and body cell repair, the body may tend to cannibalize upon it's self. Which can result in muscle tissue lost, which any self respecting BB'ing wants to avoid at all cost. Also the energy output can become lower for workout or just about anything else on a drastic reduction of a normal calorie input.
Just a suggestion, do what you wish, but many find a alternative eating pattern of lower daily carb intake can reduce fat to the extent that the metabolism is encourage to burn fat 24/7. Even when the body is at rest. All while keeping the body at healthy state, holding onto the present muscle mass or even increasing it if a well planned training protocol is followed. A 100 grams of carbs a day is the usual starting point of a lower carb diet. If results are slower than expected, than drop to 60 grams daily. Still not happy, than 40 grams as the point of lowest amount allowed. Don't want to drop below 40 grams, when it's really never needed. Avoiding grain, dairy and processed food are the first step when beginning a reduced carb protocol. With this style of eating, the stomach will feel full. Never, ever any reason to feel hungry or starve the body.
If you have a complete torn/ruptured rotator cuff ligament or muscle (there are 4 of each) you will find even normal activity quite uncomfortable. Some guy's will try to work around it, and you can to a certain degree. Though unbalance development/strength can only invite more injury. it's like your cheating yourself, working around this tear, not really gaining full potential for development, if you can't do any serious pressing or even pulling when working out. A lucky few can train most of their lives with a damaged rotator cuff.
Good to know Squattogther has successful rehab. Met a few ER workers, with those extra long shifts. Tend to be presented with the option of taking a variety of 'helpers' during, and off, those shifts. One of those ER workers was a doctor, who went into rehabs quite a number of times. On his third marriage at present.
Good Luck