I've just joined today, but have spent many a night in the nursing chair perusing various posts particularly concerning mixed feeding. I thought I'd sussed my routine, but find it's all gone to pot lately and am in need of some suggestions.
The brief summary is that I introduced formula, upon the advice of the nurses at NICU, a week after my son was born. He lost nearly a pound that first week, even though I was exclusively- and continuously!- breastfeeding. They put me on a breast pump, saw I was only producing 30 ml (barely) and concluded I wasn't producing enough. That's where it all began and that's where I've been ever since.
To begin with, they put me/us on this routine of: 20 minute breast feed, followed by 5 minutes expressing (on the pump) and then top up with 90 ml. Not sure how long I stayed with that intensive routine, but it has since evolved, and I've stopped expressing. Currently, I pretty much exclusively breastfeed at night (which is a whole other matter as DS seems to be waking up every 2 hours after going down and then every hour after 2:30am. Ugh!) During the day, however, I start by offering the breast, then if he gets fussy (at the breast), I offer him some formula. Sometimes he takes the formula, sometimes not. My constant worry is: is he getting enough! As he has been gaining weight, I would say yes, but this haphazard method is putting me through the paces. And, now, he appears/is constipated (not gone for 3 days), so I'm wondering if he's been taking in enough fluids.
At the moment, he's been taking in roughly 400ml of formula (as he is 15 lbs., I assume he must be drinking another 600 ml in breastmilk, roughly, gauging it by the old 30ml to 1lb of body weight estimate!) TBH, though, I can barely imagine that I produce 600 ml.
What I wonder is: Is there a better system? A friend suggested that maybe I just breastfeed at night and in the early morning and early evening feeds, while offering formula through the day. My ideal would be to keep up the breastfeeding until I introduce solids and THEN maybe (just maybe) exclusively give him breast milk when he is not eating solids.
Apologies for the huge ramble. Anyone who has developed a more successful, less stressful system, please share!