You sound rightly frazzled! It's a rough gig when they're doing that!

Here's what has helped me through these periods (basically all workarounds to survive - no sort of 'training' ever had a lasting effect on my kid's sleep, only time)
bed share - i gave up on the cot with DS at 8 months and wish I'd done it sooner! Still haven't tried sleeping DD separately. I'll wait till she's sleeping through and I don't have to get out of bed. That's the real killer, I reckon, when you're both wide awake because you've had to get up and then it takes so long to get back to sleep.
Feed to sleep - if that's the quickest route to sleep (it stopped working after a while, doh!)
have sleep ins on weekends or any time help was at hand
let other things go and take advantage of any rest time I could

Be kind to yourself and give yourself some slack. You're tired.