My LO does the same exact thing. Nurses 2-4x a night and it's the only way to get him back to sleep most of the time. He also puts himself to sleep at bedtime and is frequently awake when done nursing at night. I'm not sure what is going on as this has been happening since he was about 5 months old. I'm at my breaking point now though and am weaning him as I haven't been able to figure it out in the last 5 months.
Yep, sounds exactly like us. I am pretty close to the breaking point too. Thinking about night weaning, at the very least. I'd like to keep BFing a while longer if I can, but I am exhausted to the core.