In later years, I thought how kind Prabhupada was because he knew I’m a simpleton. I’m so simple that this is all I have to do and I’ll go back home to Godhead. If you remember Prabhupada and surrender to him, you’ll go wherever he goes, and he’s definitely in the spiritual world. So my task is to remember him and surrender to him properly. I’ve been told also that “don’t forget to feed me,” means to distribute his books, to preach. But I think he meant that I shouldn’t forget to offer him food, so I don’t take anything that isn’t prasadam.
Srila Prabhupada tells don’t forget to feed me
Jagaddhatri Dasi: The implication of what I was doing began to dawn on me, and I blurted out, “Srila Prabhupada, how am I going to remember you and surrender to you for the rest of my life?” Prabhupada was quiet for a second, but he liked that question. He chuckled and said, “If you chant sixteen rounds a day and follow the four principles, you’ll remember me and you’ll surrender to me.” Then he paused a moment, laughed again and said, “And don’t forget to feed me.”
Reference: Memories Anecdotes of a Modern Day Saint – Volume 3 by Siddhanta Dasa