I heard I could use my 2019 earned income instead of my 2020 earned income in figuring my earned income tax credit for 2020. Is this true?

High deductible health plan (HDHP)

For 2007, a high deductible health plan is a health plan with an annual deductible that is not less than $1,100 for self-only coverage or $2,200 for family coverage, and with annual out-of-pocket expenses that do not exceed $5,600 or $11,200, respectively.