I don’t know the percentage of women who are breastfeeding and are still in amenhorea at 6 mouths. John Kippley give on his website 50% of american women (wathever the conditions of breatfeeding).
I find this percentage high- just my experience-. As I have already said, I know a lot of women who have had amenorhea period much more longer than me, while breatfeeding (and often worked without their baby too). Of course, as breastfeeding mothers are rares, past the first mouth in France, It is still annedoctical.
And I disagree, We can promote LAM. Not because It worked for me, or some others, but because It have been study in the world, and the Consensus of Bellagio have been adpoted by WHO.
Yes, it worked, with high effectiveness to prevent pregnancies. 98% as long as the criterias are respect. The same, or higher, than barrier methods. Same as NFP. It is known that it is a transitionnal method, and when it is proposed by health institutions or providers, it is with another contraceptive plan for when the mother will go out of one criteria.
It is the only natural method who is promoted as acceptable for post partum period by many health institutions or States (such as mine). NFP is very often considered as inappropriate and uneffective for this time.
So yes, we can promote it too. To do the contrary, because “it had not worked for me, or for x”, is the same empirical argument which you reproches me. It can be a relief for some couples that this alternative of NFP exist. And if the period return, it had been at least try.
Of course, there is a little chance of pregnancies (2%)- which mean before the first period. But the same can be said with NFP at a level similar, and even with contraceptives it not exclude.
It is hard, and certainely difficult to have 2 pregnancies in a short time, but if we are convinced against contraception, and still agree to have intercourses, we must accept that.
And there is much more chances that period will come back before than a pregnancy.
And for women who have been already accustomed with self-observation, there will chances that when the period come back, it is not a complete surprised, because the hormones will have worked previously. I don’t speak here, of the praticular situation of a early come back of fertility which is much more complicated.
To resume my opinion is if we cannot proposed LAM, because of non-efficiency, we cannot proposed NFP in normal context too.