Both Hollands I've had were around 4.5 lbs due to being false dwarves (no dwarf gene, making them too big to be "show" quality). A Holland lop won't be anywhere near 3 lbs without that gene.
The dwarf gene is dominant (only takes one copy to work). If they get a copy from BOTH parents (two dwarf genes), this is a fatal flaw referred to as a "peanut" - the kit will die before weaning age. One copy = dwarf sized, aka a "true dwarf". No copies (meaning two 'normal' copies of the gene) in a dwarf breed (like Hollands) = "false dwarf" (dwarf breed without dwarf size). To avoid peanuts, most breeders breed a false dwarf to a true dwarf - this eliminates any chance of receiving two copies of the dwarf gene. On average, half the offspring will be true dwarves and half will be false dwarves (vs 50% true, 25% false and 25% peanut when crossing two true dwarves). False dwarves are sold as pets or breeding stock, since they don't qualify for showing.
As for the papaya, the limit is 1 tsp per 2 lbs body weight per day for *fresh* fruit. Dehydrated fruit has significantly more sugar for the same volume since so much moisture has been removed. If it's the size I've seen before (approximately 1 cm wide cubes), I recommend about 2 a day for a 4.5 lb Holland.