He won’t get it. IIRC, a panel of 3 of the 5th circuit could get first shot at it after that, and depending on the makeup of the panel, they could rule for or against the president. An en banc ruling would be the entire 5th circuit that is more conservative, so they would overrule their own panel if it decided something they thought was wrong. It would then go to the Scotus. We could be talking a year+ from now which would put it directly in the middle of the presidential campaign.
They’re only doing this to give the dreamers hope.