I don't think he will totally forget anything per se. Studies have shown that a baby's recognition memory, that is the ability to identify people and objects he has seen before after a delay or time apart, will increase dramatically during his 1st year. Moreover studies also have shown that at 3 months, babies can remember new pictures or toys shown to them 1 to 6 days previously. Since they've been with you pretty much since birth, your face and presence would have been imprinted on the baby's memory. Don't think they will forget their parents so easily :)
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