Our little one struggled with the 4 month regression but eventually was doing pretty well....she has always only gone down off the boob but generally was going down and sleeping about 6 hours then waking for a feed and sleeping another 4 hours.... but she is just about to turn 7 months and things have gone crazy....she is near impossible to settle (literally taking hours) and once settled she will only sleep in her cot for about 15 minutes before waking up instantly screaming....it escalates so quickly if left that within a couple of minutes she’s worked up to the point of vomiting! The only way to keep her asleep is just to hold her all night! Has anyone else been through this or have any idea how long it will last....we’re both completely exhausted!