I started writing a very long post, but I figured that I could just answer any questions that people have as needed.
Anyway, I'm having a really difficult time explaining the "nursing on demand" concept to my parents. When 11 week old DS shows obvious hunger signals, they waste no time to shove a finger in his mouth (we don't use pacifiers and I have repeatedly, explicitly asked them not to do this), comment on his "strong sucking reflex", or say things like, "it's not time to eat again yet" or "you can't possibly be hungry again already" or "you need to let mama refill". They are both so supportive of me breastfeeding, but they really don't understand, IMO, how it works (even though my mother exclusively breastfed me and my two siblings). It is becoming really frustrating to me.
Their attempts at pacifying him and denying him immediate access to food have resulted in a few things so far, including (just after his birth) causing him to lose over 10% of his body weight in 48 hours (they were promising to wake me up to feed him, but they weren't) and (much later down the road) majorly complicating a severe acid reflux problem (due to DS's inability to eat enough because of the extreme pain), which resulted in poor weight gain. I think that they feel he should be going more like 3-4 hours between feedings when he typically goes 1-2 hours during the day (he sleeps long stretches at night, though, and we're extremely fortunate).
I don't know how to be any more clear. My parents are both educated and have experience with breastfeeding. I've tried talking to them, sending them articles, giving explicit instructions, but nothing seems to work. Please help me. How can I be more clear?