Yeah, everyone is so different! I got mine back with DS1 at 15 months but I was pumping and I had to purposely cut back a good bit. I think I might get mine back at about 17 months this time because I don't have it yet, but I have had CM so I'm thinking I'll get it in a couple weeks.
I'm just trying to get an idea IF nightweaning really would help her get it back so she doesn't feel she has to wean completely. I probably should have titled the thread "Nightweaning and TTC" to make myself a little more clear. I feel if I had more info that it worked for other women without completely weaning she would be convinced easily not to wean entirely.
I am also pretty sure that if she did decide to wean him and it was difficult for him she would probably reevaluate and readjust because she is very gentle as a parent and I don't think she would want to make it hard on him.