Hi there!
I generally use 0.2 ml per 5 lbs, and dose BID. For 60 lbs that would be 60/5 x .2 or 12 x .2 or 2.4 ml. That works out to 1/2 tsp if that is easier for the client. They can mix it with a little milk or broth to blunt the taste and pour it on the food. Real food works best (i.e., actual meat), both by supporting the action of the formula and also making it easier to disguise the herbs
Steve