American opportunity credit and lifetime learning credit: How do I do override TuirboTaxes selection of the American Opportunity credit?

This year I cannot claim my son as a dependent due to his income so he can claim either the lifetime learning credit or the American Opportunity credit. The American Opportunity credit is worth more this year than the lifetime learning credit.  

I cannot claim the lifetime learning credit due to income even if I claimed my son as a dependent.  In 2019, the American Opportunity credit will be worth more than it is worth this year and it will be the 4th year of eligibility.

I want to override Turbo Taxes election of the American opportunity credit and I want to select the lifetime learning credit.

How do I do that?