PPAF While Nursing - Return to Fertility

I've just gotten my fifth PPAF at 14 months PP and finally its a little more normal, indicating that my body was able to put up a reasonable lining. My cycles have evened out to be about 5 weeks long, though the time between when I and when arrives is pretty consistently 2 weeks now.

We are wanting to start to TTC for #2 soon so it was rather worrying to me that my lining was so thin. Nothing's really changed in terms of how much I am feeding him I don't think. Perhaps my body is just getting back fully into the swing of things.