Hey there
I am sorry to tell you that you will not be eligible for CDS 1 2020. In 2019 For officer's training academy course candidate must be born not earlier than January 1995. So in next year you will not be eligible.
Check about CDS eligibility
https://www.google.com/url?sa=t&source=web&rct=j&url=https://competition.careers360.com/articles/cds-eligibility-criteria/amp&ved=2ahUKEwiby837r6njAhUST48KHSTRDjIQFjAAegQIARAB&usg=AOvVaw14kUrr6HUwo40TcS4-N6sc&cf=1
Good luck
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