Hi M.. I do want to answer your question, but it may not be what you want to hear. Did you ever question why you are counting the number of ounces your very young baby is getting from your breast?
As a nurse (an RN) and a mother of 6 children, all breastfed, I can tell you that breast milk is very, very different from formula. WIth formula feeding it is very important that a baby receive a certain amount- too much or too little is not healthy for the baby. Breast milk is digested in a very different way than formula- it is digested more thoroughly and therefore your baby will be hungry and need more of it. It is the much healthier choice for your baby and I applaud your efforts to nurse him. Breast-fed infants can nurse freely, on-demand without mom worrying about the number of ounces he is getting. You can rely on weight gain and wet/dirty diapers to gauge whether he is being fed enough. There are so many resources and books out there for breastfeeding moms to get information on the healthiest way to nurse. The way you are nursing your son, scheduling him on your breast, is not correct on many levels- he is very young, he may need more breast milk as he grows and the composition of your milk changes from feeding to feeding (this does not happen with formula!). He may need to suck more than you are allowing him. There are many more reasons why I would encourage to you to seek out books/frineds who are knowledgeable in the area of breast milk and nursing.
Sleep training a breast-fed, very young baby is unwise. Probably it is not what you want to hear. You are wondering about the quality of your milk- scheduling and sleep training can wreak havoc on your milk supply. It is unhealthy for your baby and for your efforts to give your baby breast milk. Babies have been around a lot longer than sleep-training advisors! They do not need to be trained. The difficult part is that as mothers we need to be responsive to our babies needs, to watch and see what our babies need for life as oppose to rigid training schedules. It is very important to understand that your baby is different from your friends or neighbors baby. As a mom of six, each of my babies were very, very different even from each other!
Though there may still be people out there advocating rigid training for nursing babies, there are many more who will give you healthier advice on how to care for a nursing baby in terms of sleep and feeding.
As a new mom, it can be daunting and feel safer to hold onto a rigid schedule, but you do not need to put yourself or your child through that. Your pediatrician is pointing you in the right direction. You are fortunate to be able to stay home and be with your baby- feed him freely, let go of the schedule idea, and if you and your husband are OK with it, let him nurse by your side at night. You will sleep and so will your happy, loved baby.
If you would like to email me, I could suggest some reading material or support for nursing moms in your area.