The blessed sacrament isn’t considered a meal for purposes of fasting any more than Christ’s Eucharistic Body is considered warm-blooded flesh for the purposes of abstinence. We can have His Eucharistic Body any day, includng Ash Wednesday and Good Friday, and any other day when we happen to be fasting or abstaining.
Remember that the definition of ‘fasting’ includes the intent as well as the action. Going hungry because we forgot to bring lunch or lunch money to school, or because we’re on a diet, isn’t fasting. Fasting is where the deprivation is done with the intent of spiritual purification. Such spiritual purification ALSO mandates that we receive the Eucharist whenever we can, including on those fasting days.