Hi Sharon,
  As Dr. Fleiss said, human milk is loaded with lactose.
True lactose intolerance is something that tends to happen
to people around age 4-5 (the physiologic age of weaning)
because physiologically we should not need  lactase anymore.
 In cultures where cow's milk consumption is low or unheard
of, those people have a very high rate of lactose
intolerance.  In countries where cow's milk intake is high,
people's bodies have adjusted to continuing to produce
lactace for a lifetime, or at least for many years beyond
weaning.
  It is not possible (or necessary) to remove lactose from
human milk.  What you described sounds like a normal baby to
me.  If this baby is infrequently stooling, it could just be
a normal breastfed baby, and Mom should consider herself
lucky that she doesn't have to change that many poopy
diapers.  It doesn't matter how much the baby grunts or
groans or what kind of faces he makes when having a bowel
movement, as long as it is a normal mustard-style bfed poop.
 Everyone needs to keep their fingers out of that poor
baby's rectum too.  Many docs freak when a baby doesn't
stool frequently because with an artificially-fed baby, it
means constipation.  I have yet to see a constipated
breastfed baby, and my very own second child had a bowel
movement once a week or less.  (I was a very happy camper!)
  As far as the other fussiness goes, this may just be a
high-need baby.  When a mother tells me that she has a
colicky baby, I always ask if the fussiness is inconsolable.
 Does the baby cry at the top of his lungs?  And is Mom's
every effort to comfort the baby in vain?  There are some
babies who just NEED to nurse every hour, or that need to be
held most of the time.  Has she tried a sling?
Unfortunately, many mothers today don't want to "mother" the
baby.  The would rather be a drug dispenser.  If the baby
will calm down when nursed or picked-up, then he is fine. If
he is truly inconsolable, then it could be any number of
allergies...dairy products, mom's vitamins, baby's flouride,
etc.   LLL has a couple of great reprints that you might
find helpful:  "When Baby Cries" and one on allergies.
                      Best wishes,  Debby Boehle, IBCLC