How can I claim the Child Disability Amount? This is the first year it's not showing in my CRA payment schedule.

You'll claim a disability transfer from a dependant in the Deductions section. Be sure to complete the Additional Dependant Information screen as well.

If your child has a valid Disability Tax Certificate, you will automatically receive the additional benefit monthly if you receive the Canada Child Benefit. New amounts reset every July based on income figures from your tax return.

https://turbotax.community.intuit.ca/replies/3293463