wow i couldntve written this better myself a while ago,had exactly the same thing,someone gave me that book about routine and sleeping and alot i just cant do but one thing that helped me was i wasnt letting DS have enough wake time so i followed her routine just for that like left him up say ok well im all over the place but he was sleeping say 7pm to 7am(waking in between not all night ofcourse)and then i was putting him back to bed thinking he needed it and then hed have a good sleep after id fought,rocked,patted etc but then all arvo would cat nap and be cranky etc so instead i let him up from 7am for say 2 hours then put him back to bed at 9am like the books says and he slept 2 hours!!then it said let them up 2 hours again and then back down and so i did it and he slept another 2 to 3 hours!!so since then hes been great i was so paranoid about him going back to sleep i spent all day trying to get him down and back to sleep and then i read maybe there not actually tired enough for a big sleep just a catnap but mine always needed more,so now i wear him out lol,from 7am after his feed me and DD put him on his tummy and play with him and that till 9am then we know he has a nice ssleep so we can do stuff together etc,i couldnt get my head round it but it worked for us,saying that he will still only cat nap out so maybe he just likes his cot now,and ive just posted on here that hes wakingall night its not to do with more sleep in the day tho as hes only 4 months and ive done the bigger sleeps for a while now where as this new thing is only 2 weeks or so...oh the joys!!