I would think Trump would wait to see how DeSantis re-election campaign pans out.
Has nothing to do with it
I'm 99% sure DeSantis should run in 2024. If for some reason, he does not pan out, we'll have to see who else will emerge by then. Maybe Kristi Noem, if she is like Sarah Palin, then it might work.
Remember that Sarah Palin came up with MAGA movement before it was formally established.
Trump should relish his role as the Kingmaker. Whoever he is going to endorse will end up winning the primary in 2024.