Re: Going back to work 10m.
at 10.5 months, my baby was nursing more than every four hours. but you might be able to stretch it if he'll take solids in the meantime nurse right before, lunch, right after. the other question is whether your body will be able to last four hours. you might be more comfortable pumping once in the morning and once in the afternoon, then you'd have some to give him. you won't have to do this for very long - 6 weeks - and whether he'll be ok and whether your supply/engorgement will be ok depends a lot on you individually, i think.
Nursing, pumping, cloth-diapering, babywearing, working professor mama with the awesomest SAHD ever.