After an interview with Axios, it looks like Trump is already seeking an exit strategy. He was already warned by allies in the region that there wasn't a way where the outcome could be controlled and was under massive pressure to not launch am attack on Iran. The economic repercussions for those allies are massive.
But Trump was too stupid to heed the warning. Now he's looking for a way out.
If he backs out (with speeches about a successful military campaign and lots of bollox thrown in), he's going to look like even more of a fool to his already dwindling base. Many significant MAGA influencers and right wing commentators (Tucker Carlson for example) are openly furious with him.