Please can I join your thread everyone?
I have a 10 week old DS (my second child) with (silent) reflux, which tends to totally bugger up sleep. My first DD was an appaling sleeper, also with reflux, who like others on here only really improved when the reflux abated a bit around 7 months and (like others on here have said) we could do sleep training.
My 10 week old DS doesn't sleep in the day unless in moving pram (no pauses at that crucial transition point between deep and light sleep, mummy, thanks). Or being paced around with the dummy firmly in his mouth in a sling in a darkened room. If I didn't intervene and enforce sleep, he would be awake for around 7 hours, before taking maybe a 30 minute nap out of sheer exhaustion. If I don't enforce naps, he screams even more than normal. It's so hard as his preferred methods of going to sleep are totally toddler-incompatible.
He finally conks out for the day at around 1130 pm, usually waking once for a feed (he is FF) + an hour and a half of resettling in the night, up for the day around 7.30. He is chronically, chronically overtired.
The crowning glory is that I have got PND, one of the main symptoms for me is,.... yep, you guessed it, insomnia! So even when he does drop off at night (and I know I am really lucky to have a baby who does at least one 4 hour stretch)I can't. Lovely.
Well, sorry to go on, that's enough about me: antidote, could your DH take pack-up sarnies to bed every night so that if he wakes from hunger he can refuel quickly and then hopefully drop back off? that's what I used to do when I was still BF and had the same problem.
re sleeping in the day, have you tried wax earplugs? You have to really jam them in your ears (and of course have someone else who can mind your baby should they wake up). I find they block out all noise very effectively. I actually use them at night too
but even through them always, always hear my DS wake when he is making only the faintest rustle.
you say not sleeping has buggered your mood - I can't think of anything helpful at all to say here really, just that I don't think anyone should underestimate the effects of sleep deprivation on mood. With my first DD I had hallucinations because her sleep (and mine) was so poor. Everything you describe I have also felt - despair, anger, guilt, weepiness.
What you said about thinking about leaving struck a parrticular chord. I also have felt like this recently, when I was at my absolute lowest and I still fantasise about it now sometimes. DOn't feel like you're on your own thinking this way - you're not. With me it was a symptom of both sleep deprivation and PND - am not saying you have the same but just a plea that if your mood continues to be very low, please don't do as I did and let things reach crisis point before seeking help of some kind. Hope you don't mind me saying that.
Anyway, I hope all our babies decide that 2011 is the year they will sleep like tops.