My ds is 9 months and since he was about 6 months we have been co-sleeping, initially the odd night in our bed, then more consistently for part of every night (after he moved into his own room), and now I basically go to bed at his first wake (he wakes every 1-3hrs most nights) in his room which also has a bed in and he sleeps in with just me. It has been the way to maximise the most sleep for us all as a family in the short term but I the more mobile he is, the less comfortable I feel and I don't sleep that well with him.
How/when did co-sleeping stop for you if you were still doing it 6m+?
Fwiw, he is breastfed. He isn't fed to sleep at the start of the night but does have a shh/pat etc after bedtime story. He is often fed back to sleep. We tried sleep training once and I couldn't hack it at the time but also think the timing wasn't right - he was just on the cusp of crawling and loads of other development stuff and there was just too much going on and more upset for him being left than I could stomach, so we stopped on the first night. He has never really slept longer than 3hr stretches and was in a next to me before he got too big and was moved into cot in different room.