I wrapped Darcy until 8 months and then we just went cold turkey. I wanted a grobag for her because she is a wriggler and won't stay under covers so I bought a cheapie to try first just in case - she HATES it. It is more frustrating to her than anything. SO when it gets really cold I will get her some fleecy sleepsuits instead that you put over their jammies.

There were a couple of nights at first she drove us spare pulling the dummie out, but she did just get used to it.

Good luck.