Before 2wks, my BB has 4.8lbs only, my doctor advised that BB looks small, just hit standard, he suggested me to take more rest, so I have already started my long vacation, eat one egg/cheese/milk everyday, and sleep more. Today, my doctor advise that BB's weight looks enough, it may not be a problem if BB come into the world earlier.
Therefore, if some mami wants BB to grow more before edelivery, you may consider above.