I'm not a big guy or big hands and have never had this problem or even noticed how close the shifter/knob was to the dash, but I did look today after seeing this thread.
I have at least a 2-3" gap. Like said above, I do also change my hand/grip orientation depending on whether I am shifting to 1,3,5 or 2,4,R. But I have done this for the past 40+ years of driving floor shift.
Maybe there has been some kind of lift etc done to your Jeep to change the position. A possible solution would be to remove the shifter, heat, and put a little more bend in it.
denton county, tx