No, you can not use 2019 AGI; you can only use 2019 "Earned Income". If your 2020 AGI is too high to qualify for EIC, you don't qualify for EIC for 2020.
HOWEVER, you said your AGI is only $25,000. That does not disqualify EIC for a Single person with 1 dependent. Why do you think that disqualifies you?
