Trump and McConnell certainly want to replace Ginsburg, and if it were just up to them, then they'd do it. Fortunately, they have to contend with political reality. The hypocrisy of doing this even four months ago is different than six weeks before the election. Murkowski has already said she won't support it ("fair is fair"). Such naked hypocrisy is not a good look -- though, admittedly, with Trump anything is possible (except decency).
I'd guess President Trump will meet with people, claiming he wants to be prepared. At rallies, he'll go off message to say things that the crowd wants to hear, but it's not clear to me that Orange Man & Turtle Face can get the necessary number of Republican Senators to go along with a confirmation.