bonemeal

I homecook for my dog.  His ear infections and skin problems are gone.  I started homecooking for him in May after a long (almost 2 months) of a very bad ear infection that just wouldn't go away.  Anyway, he is doing very well on homecooked.
 
I give him homecooked twice a day and supplement with Solgar Bonemeal.  The serving size on the label is 1 teaspoon is 5 g.  Calcium is 1000mg and Phosphorus is 600mg.  I use 1 and 1/2 teaspoon for one day.  My dog is about 32 pounds.
 
In "The Better Food For Dogs" cookbook, by David Bastin,  it gives the nutrient requirements for a 30lb. dog.  For calcium 1,618mg is the minimum requirement per day.  Phosphorus is 1,201 mg. 
 
Am I giving my dog too much bonemeal?  I don't mind cooking for him, but I get stressed out because I don't know if I'm giving the correct amount of bonemeal.  I don't understand the calcium/phosphorus ratio.  I just follow what it says in the cookbook.  I don't want to hurt Jake by giving him too much or too little bonemeal.