Sympathy, sleep deprivation is horrible. I co-slept, which helped in some ways and hindered in others, then at 12 months did Dr Jay Gordon's night weaning, which took 5 nights of hell but worked! And carried on feeding in the day/early eve. Info is online, but think it's for 12 months plus. Another option, if you're thinking of winding down breastfeeding, would be mix-feeding so you can get more of a stretch of sleep sometimes.