nicky i'm not surprised - you need a break. Make the most of support!
nicky and helen I spent a lot of time making sure DS got naps in the day as he was a terrible sleeper - still not gone through the night yet without waking at 10 months! I basically gave up the idea of getting him to nap in his cot in the day and let him sleep on me. I killed two birds with one stone as he also feed much better when asleep so I'd rock him drowsy/to sleep in a dark room with fairly loud white noise, pop him on the boob and he'd have a good feed for 20 mins. Then put him on my chest and let him sleep, usually for another half hour. As his nights were so bad, this gave me a chance to lie back and doze.
I also realised that he needed a ridiculously early bedtime as we'd try and put him to bed at 8pm, he'd sleep for 45 mins then wake then not resettle until 10pm on a good night. So one day I put him to bed at 7pm (feeding at 6.15pm) and he didn't wake after 45 mins but a couple of hours. It gave us our evenings back - we kept experimenting, watching his tired signs and realised he needed to go to bed at 6-6.30pm. Even now at 10 months his natural pattern seems to be 6-6 (I can't get him to do 7 til 7!).
Unfortunately there's a sleep regression at around 4 months but I believe that if I had got DS into better habits and had his reflux treated earlier, it wouldn't have been so bad.
Now at 10 months, he takes naps in his cot (he's napping now), can self settle when in the right mood and I've taken him off his reflux meds. He was on ranitidine but it prevents proper absorption of iron and his hair started falling out at 9 months. Since I've stopped the ranti, it's fine again.
helen it got better around 5 months when he learnt to roll both ways. He started to sleep on his front at night - the first time he did, he slept from 7pm - 3am two nights in a row!!!! (I had to go and feed him at 3 as was about to burst). Clearly he prefers being on his front because of the reflux I think.
I know it's against the guidelines, but consider putting your little ones down on their fronts for naps where you can watch them and see if it works. You might have to position them so their bums are in the air and knees tucked under (as takes pressure off the tum). Alternatively put them on their left hand sides to sleep - we did this for DS from 3 months - as it is supposed to be more comfy for reflux babies. We got longer stretches at night as a result.