Second, if not, calcium should be supplemented immediately, and liquid calcium is absorbed quickly. If it is, it is not a problem of calcium, and calcium supplementation is not needed.
Third, don't give the dog chicken liver, because then the dog will lose a lot of calcium.
Fourth, it may be phosphorus deficiency, and the dog's external character is actually rickets. I suggest you change dog food. Maybe the phosphorus in this dog food is not absorbed by the dog. Rickets should be treated as soon as possible, otherwise it can't be cured.