Scott Conant is an American celebrity chef, cookbook author, and restaurateur. He is widely renowned for his three-star New York restaurants L'lmpero and Scarpetta. Similarly, he is also a judge on the Food Network's show Chopped.
As you can see blueberries have a hint of phosphorus, calcium, and fat and they have a little acid in them, however they are quite sweet as they contain a lot of sugar. So rabbits can eat blueberries but only in small amounts once a week at the most. One blueberry should suffice.
As for baby bunnies 6 - 8 weeks of age or more, they can eat lots of timothy hay, rabbit pellets from the store, parsley, bananas, apples, carrots, spinach, romaine lettuce (iceburg lettuce is bad for rabbits), raisins, turnip greens, dandelion greens, and a fun treat is Nilla Wafers.