we have now been trying to get our 18 wk old daughter to fall alseep on her own in her cot for the last 5 weeks and we seem to be getting nowhere. with advice from our health vistor we have been trying to 'sleep train' her by putting her in her cot for naps and bedtime and leaving her to cry and settle herself. we have been going into her and comforting her throughout at 5, 10 and 15 minute intervals. after about 3 weeks of this and her crying on and off for up to an hour we thought we had cracked it when she went to sleep, sucking her thumb without any trouble for about three days. But since then she has been worse than ever and gone back to crying the way she did when we first started. now into our 5/6 wk we are beside ourselves. she will now cry for up an hour and a half at naptimes and bedtime. At naptime I have often brought her down without her having had any of her nap. also she is now not settling after her night feeds either. last night we tried to settle her for nearly two hours and finally gave up and put her in bed with us. we feel stuck - if we stop now are we going to undo our 'sleep training' efforts? Or by carrying on are we damaging her psychologically? help!! is it normal for a baby to take this long to learn how to fall asleep herself?