My ds is almost 14 months now. He was a great sleeper for about the first 5 months, gradually building up to 8-5, a feed and then back down til 7. But around 4.5-5 months, things just seemed to change, he started waking more, and we have now had about nine months of terribly broken nights, almost constant sucking at night and co sleeping.
A few details.. He was exclusively breastfed and 100% refused all bottles (even for whole days in nursery as I work pt) and pacifiers. He will nap during the day, but only after rocking in the buggy or being fed to sleep. He has an absolute terror of the cot (maybe due to an unsuccessful 5 nights of cc about 5 months ago?). Also, when I say co sleeping, I mean that I hold him all night with myself propped on pillows, and him angled up, he won't lie flat. I have tried propping him on pillows and angling up the cot, but neither worked.
I am wondering if maybe it could be an ear problem? He has very waxy ears, with quite a lot of new yellowy brown wax each day. He hates lying horizontally (hence either the buggy or me holding him), and breastfeeds very often still.. He would probably feed for about 30 minutes, 6 times a day or more if I would 'let' him, as well as all the comfort sucking at night.
He has never been diagnosed with an ear infection, does not run temperatures except with colds or bugs, or pull at his ears, but a friend lately told me about an acquaintance whose baby had ear issues and similarly wanted to suck constantly, hated lying flat, and had lots of wax. They could not remember what the specific diagnosis was though.
Any similar stories out there? Was it ears? Or 'just' teething/habit? Or something else? At my wit's end with such broken sleep, and worried he is in pain without me helping properly 
Thanks for reading!