DD, 4 months, has never been a great night sleeper but will occasionally pull a 7 hour sleep out off the bag just to tease us. She was terrible at sleeping in the day too until a month ago when we realised how much sleep she needed overall versus how much she was getting, and we got tough with daytime sleeps. Now she will go down for a nap 2 or 3 times a day, usually in her cot if we're at home. If we are out we try to time long car journeys or buggy walks to coincide with nap times and if she is resisting sleep, being popped in a sling usually does the job. She sleeps for anywhere from 30 mins to 2 hours (we wake her after 2 hours if still asleep). She self settles in her cot but generally needs to be picked back up a couple of times and shushed and patted to calm her before she stops crying and actually drifts off. I'm not convinced I get her down to sleep at the crucial moment... we don't have set nap times but try to spot her tiredness cues. I wonder if by the time she rubs her eyes she is already over tired. Set nap times would be hard as the length of her naps is so variable, so if she went down at 9am but only slept for 30 mins then she would be very overtired for her next nap if we tried to keep her awake until 1pm, say. We get her up at 7 every morning and she usually goes down for her first nap around 8:30, the time she wakes from this determines the time of her next nap, as she starts yawning and rubbing her eyes after 90 minutes or so. And so we carry on through the day, trying to respond to her cues. She is very alert and needs winding down for sleep so when she yawns etc, we slow dance to a song before heading upstairs, putting white noise on, swaddling her (disastrous if we skip this step, leads to very short sleep) and sitting with her calmly until she starts to nod off, at which point we put her in her cot and she either protests a little then falls asleep, or she cries lots and we pick her up until she is calm again then have another go. The third go is usually the charm.
At night we put her to bed at 10 and she sleeps until 5ish with one or two wakings to feed. I have tried to resettle her without feeding her but have had no luck. From 5, after a feed, she is generally quite awake. She blows raspberries and chats, she will settle herself back to sleep for a bit but not usually more than half an hour at a time and often less.
So, I would appreciate advice on how to get her to sleep for longer at night (I mean for longer overall, but for longer in one go would be good too!). She gets more sleep in the day than a 4 month old needs but obviously she is more tired than she should be due to not sleeping for more than about 9 hours at night. I feel that if I reduce her daytime sleep she will end up exhausted and overtired which will not lead to good nighttime sleep, but then again maybe she is not tied enough at night? We tried an earlier bed time but it didn't make any difference to her waking time, and I have tried an 11pm dream feed but this just seems to disturb her sleep for the rest of the night and result in her only sleeping in 2 hour blocks.
I make sure she has at least 6 feeds in the day so she should in theory not be waking due to hunger at night.
Apologies for going into so much detail, I wanted to give a complete picture. Thank you for any thoughts.