I agree with Fireman on this.
He will stop singing when he goes into the moult and may not sing again for a few months, all you might here is broken song but by January of next year he should be starting to get into full song. How much he sings is down to how healthy he is and full health can be ensured with the correct diet. Alaunt touched on the subject saying to avoid fatty seeds such as hemp & niger. A good canary mix such as beyers, countrywide, versalle laga or the likes is fine plus greens once a week and multivitamins once a month in the water, you could also offer soaked seed onc