Re: 13 month old not taking enough BM
as long as he's nursing on demand at night (wait, on days you work how many times does he nurse?) he'll get enough balanced nutrition to carry him through. one of the awesome things about nursing! i think wildly fluctuating solids intake is just par for the coures, whether or not baby is nursing.
i, personally, would take this as a sign and an opportunity to pump wean at work.
Nursing, pumping, cloth-diapering, babywearing, working professor mama with the awesomest SAHD ever.