I am also not certain about a 6-week ban - it is too early, in my opinion. 12-15 weeks would be more achievable in our current environment.
But it is none of my business, outside of my own state.
That was the basis of the Supreme Court's decision last year - the Federal government has no interest in the matter of abortion, but state governments do.
No one really knows how Trump personally feels about abortion or about many other things, because whatever the subject he uses it to personally attack anyone he perceives to be a rival.
Abortion is the most emotional and divisive issue in the nation, and self-evidently, opinions vary enormously on the subject.
As such, I believe that Republicans need to coalesce around a message that appeals to the broad center of American opinion, and also one that abjures the extremes on both sides. I would argue that Democrats are considerably more extreme than Republicans about abortion, but we do have some who now promote a national ban, when such a thing would be plainly unconstitutional, and support for which would lead to electoral disaster.
We ought to begin by opposing partial-birth abortion in each of our own states, for which there is both moral authority and a sizable majority of voters who would agree. We need to work on changing hearts and minds both, before greater restrictions will gain more adherents.