That sounds very rough lise! With both of mine I never contemplated even trying before 18 months - only then were we getting a few hours at a stretch. Too tired to even think about conceiving, never mind starting over with a new baby! I'm sure it's not always the case, but I wonder if those parents who have kids close together must get the babies that sleep
Hope it's not too much longer before you get some better sleep!

We had discussed donating any spares to another couple. then we had DS and we pretty much dismissed that idea. I'm still ok with lab research - I figure it's only a potential baby and it may as well - indirectly at least - help some other parents conceive. I think DH would prefer they succumb. But it doesn't really matter since we'll be using them up most likely.