Filing Head of Household-AGI $13,241 with 3 dependents/under age 17-EIC is $5,951. Why is the Child Tax Credit Total only $1,611 for three children?

CTC for 3 children under age 17 should be $2,000/per child because the AGI under $200,000; only give me a Total CTC of $1,611 that's it. Why is it not giving me the full Credit??