Here is Trump saying in a radio interview that he supports a 15 week ban:
No; he said he was thinking in terms of what people were agreeing on. And I don’t see in the context where that specifically applied at the federal level.
One thing that the liberal sources all admit specifically is that Trump has never at any time committed to a federal ban, nor was a federal ban an issue related to the overturn of Roe and the Dobbs decision.