B.B.
Hi L.,
At 10 months your son should be able to make it through the night without waking to eat. He may be doing this more out of habit than hunger. It might be time for you to wean him from his middle of the night feedings. Here's what my husband and I did with our son, who was about 5 1/2 months at the time. When we did this he was waking two to three times per night to nurse. I started reducing the amount of time he nursed every night ( you could do every other night if you would prefer, it will just take a bit longer) So if you have been nursing him for 6 minutes every 4 hours, only offer 5 1/2 minutes of nursing tonight. When there are multiple feedings per night, you also increase by 15 minutes per night, the amount of time between feedings. So you would do 5 minutes of nursing every 4.25 hours tomorrow, 4 1/2 minutes every 4 1/2 hours the next night, and so on. We found this method in Dr. Richard Ferber's book (which made a lot of sense to me, you may want to try reading it to see what you think), and it worked really well for us. According to the book, most kids stop waking to eat before you can reduce them down to nothing, my son stopped waking to feed after 4 or 5 nights. I thought a gradual approach was better than just trying to quit cold turkey, which seemed pretty awful to me. Unless your son is under nourished during the day, is underweight, or has some other medical complication, I don"t think there is any reason he would need to nurse in the middle of the night, so don't feel bad about eliminating it.
Also, make sure when you go in to feed him, you keep it as utilitarian as possible, no lights, no conversation, just nurse and back to bed. You want to show him that nighttime is for sleeping.
Also, something I noticed while I was nursing, my son was far more effective at getting milk than my breast pump, so don't necessarily assume that since you can only pump 4 oz, that he only gets 4 oz when he nurses. If you are really concerned go ahead and offer an extra feeding during the day, your milk supply will catch up in a few days, or offer formula if you aren't able to nurse.
Good luck!