How much protein should my 9 month old be getting from solids?

Not enough to count. A 9 month-old baby still gets most of his nutrition from breastmilk or formula. The baby foods and mashed up adult foods supply some extra calories, some of which is protein, but it's not worth counting the grams. The baby should try different flavors for fun, but he doesn't need to think of solid foods as a very important part of his diet until after his first birthday.