How many times does your wife latch your baby on? Have she tried to use a breast pump to increase her supply. If there is demand, there will definitely be supply.
Try to pump 10-15mins per breast after each latching, continued pumping, will tell your breast to produce more milk.. Try this for a week or two and you will c your supply increase.
An alternative would be to take Fenugreek, a herb, that is known to increase milk supply.
Can buy @ GNC.
Can also go to Kelly Mum webbie to browse thru breast feeding tips..
Cheers n JiaYou!!