I have 17 month old twin girls, plus a 4 year old boy. One of the twins - M - has always been a dreadful sleeper. At 3 months we separated the girls so that M wouldn't disturb the other one (L), and L has pretty much slept through since then. For a period at about 10 months, M slept through and we moved the girls back together but then they got colds etc. etc, and we had to separate them again. Occasionally now M will sleep through but never consistently and there seems to be no obvious reason for why she does.
She wakes at night and I feed her back to sleep. Sometimes she settles back to sleep. Often she doesn't and we can be up for 2 hours, 3 hours or the rest of the night with her. I feel like we've tried everything. She doesn't respond well to any sort of CC technique as that just increases her tension and then there's no hope of her sleeping. Sometimes I sit by her cot and she holds my hand - that can work but not always. Sometimes I stand by the door of the room and ssssh until she settles but that doesn't always work. Sometimes I go in and out of the room telling her to lie down and go to sleep and that can work but not always (that's normally how we get her to sleep in the evening). If she's not slept after 2 hours or more then we bring her down and get her to sleep in the buggy (which is where she has her midday nap) - but last night even that didn't work.
I am going out of my mind with tiredness. It's affecting my ability to parent my other children and I can feel I'm on the edge of depression. I try to shoulder the burden of it, but my partner is a poor sleeper and if I'm up with her he generally doesn't sleep well. I'm beginning to worry about his ability to hold down his job. Also, we have to sleep downstairs on the sofa bed as M is in our room. We are desperate to move the girls in together and get our bedroom back, but that feels like a long long way away.
My question is, should we turn to a sleep counsellor (I am willing to pay any amount of money at this stage), or should we accept that we have a child who doesn't sleep and grin and bear it until she's an age where we can reason with/bribe her (that's basically what my HV said). From what I've read, most sleep counsellors use a form of CC or gradual withdrawal and I really can't see those working with M. I feel like we've tried them although perhaps not as strictly/properly as we would if we had somebody supporting us...? I would really appreciate advice. Be gentle on me, I'm having a very tough time.
Thanks.