It didn't do what you think. And you aren't a rare case that can't make milk. 1.5-2oz per session IS in the realm of normal. You ARE making milk. Now breastfeeding doesn't have to be an all or nothing thing. And I am really sorry about the way the doctors and nurses made you feel. And if you are never able to let go of the self doubt as a result of the way they threatened you as a new mother I would understand. But in terms of what you are doing, I can't speak to the way you are feeling. I can only speak to the facts. And factually it is NOT TRUE that your milk dropped dramatically because you breastfed more during your weekend experiment. However, your experiment wasn't really an indicator of ANYTHING. Because you are saying that you usually start at the breast and then bottlefeed her and then pump. So that is a set amount of stimulation. (And truthfully if you ARE wanting to get closer to less formula you are going to need to pump more than 6 times a day.) But really all you did with your experiment is eliminate one of method of stimulation. And since it's all supply and demand, it's reasonable that you would make less. Because during that time you stimulated your breast 6 times less often than a normal 24 period.
And listen, I am supportive of breastfeeding in whatever way works for you. So if you want to combo feed I can get behind that. But I am going to be honest with you and tell you that your post sounds like you are really trying to hear that you are a special case and that actually breastfeeding makes you make less milk. But it's not true. So now what? Can you talk to us honestly WHERE you'd like to get to? Because we can work with you to get there. Would you be happy making half of your child's food? Because if the name the game IS combo, feed, you DO need to be willing to let go of some of the formula. 4oz is ALOT of food. And if your baby is getting that much, there really is no reason for her to work for other milk. So you need to think about how much farther you are looking to take this. Because if you want to continue to give her breastmilk for any length of time, you HAVE to keep up a demand. It's the reason the slope with formula is always so slippery. Not that combo feeding can't be done successfully. It can. Absolutely. But only if the pumping, feeding part is done diligently and religiously. You admitting you don't even always start at the breast....it doesn't bode well for the long term. Because if your baby does not give your body the continuous signals to make milk, your body doesn't make it. That is how it works. THAT is why supply dries up. And yours could. And it would not surprise me if it did. Because you are simply not allowing your child enough opportunity to demand milk in abundance. And never will with 4oz formula feeds. So you can rail on about how wronged you were. And you were. And it sucks. But you are still making milk. And a surprisingly decent amount all things considered. And you baby is latching on. And eating. So what you do with that information is totally up to you. But if you keep it up the way you are, there is no reason to think that your supply wouldn't drop. Read the link about weaning off supplements. Commit to pumping 2 more times a day. At least. So that you can breastfeed and then supplement with a bottle of your OWN milk. Work to consciously feed your baby less formula. Or look at the fact that realistically wanting this in the abstract before the baby was here and then having it challenged and having your ability to mother challenged because of it was too tramatizing for you and that the actual work to get to a place where you trust your body to adequately feed your child is too much and accept that. And that is OK. It is. But it's NOT because you don't make milk. Or can't. You can. You do. YOU ARE. And there is NOTHING in your story that leads me to believe otherwise. 1.5oz of breastmilk in a feeding is in the realm of normal. And if all your feedings were at that amount, YES you DO still need to supplement. But not with a 3-4oz! With 1. Or 1.5. Or 2oz. At most. Seriously.