My baby is currently 13 weeks old (6 weeks corrected) and used to sleep in his Moses basket without an issue until about 4 weeks ago. Since then he will only sleep in our arms or if he does settle in his crib it is only on his front / side which means I do not get any sleep. We have now bought a next to me crib and he seems to like more but still won't settle safely on his back, even when we warm it up with a hot water bottle before popping him in.
Reading previous threads most advice is to co-sleep however as he was premature and born under 2.5kg it is not safe for us to do so.
He is formula fed around and takes 3-5oz every 4 hours. Our routine before bed includes a bath, book and bottle however he rarely takes more than 3oz before bed leading to him waking up hungry a couple of hours later.
We have persevered with putting him down in the next to me between feeds at night and we are now at a stage where he spends more time in there than in our arms however he is unsettled and has broken sleep meaning that when we do hold him to feed he falls asleep almost instantly on the bottle and then wakes up an hour later hungry. He is then knackered during the day and we struggle to keep him awake which means by the evening he's wide awake and it feels like a vicious cycle.
Im completely exhausted and at a loss of what to do next but I know I can't continue holding him to sleep all night every night. Any advice would be gratefully appreciated