Prasada on Ekadasi should atleast be in the noon if not in the evenin

This is an extract from the Padma Purana when the golden maiden Ekadashi who
has manisfested from the transcendental body of the Lord is asking for a
benediction:

The maiden said: "O Lord, if You are pleased with me and wish to give me a
boon, then give me the power to deliver from the greatest sins that person
who fasts on this day. I wish that half the pious credit obtained by one who
fasts will acrue to one who eats only in the evening [abstaining from grains
and beans], and that half of *this* pious credit will be earned by one who
eats only at midday. Also, one who strictly observes a complete fast on my
appearance day, with controlled senses, goes to the abode of Lord Visnu for
one billion kalpas after he has enjoyed all kinds of pleasures in this
world. This is the boon I desire to attain by Your mercy, my Lord.

Conclusion:

FULL FAST : Goes to the abode of the Lord
EAT IN THE EVENING (ONCE) : Half credit
EATS AT MIDDAY : One-fourth credit
EATS IN THE MORNING ITSELF : Not recommended at all

Your servant,
Nayana-ranjana das