I have driven 900 miles in a day but the second day had to be shorter. I solve the issue by leaving the night before and getting 200 miles done and pulling into a rest stop for the night. Then the next day I am up like a work day at 5 am and on the road. I stop about 9 for breakfast and then drive again. I can cover 800- 900 miles that way. I can do 600 the next day so that is your 1800 miles with two days driving and arriving in time for a late dinner at your destination. It helps that you gain an hour going west every so often. Now coming home I plan for three days so I am driving 5 days of my 2 weeks. I will stop and see something on the way home too so it is not all driving each day.
That said I did that when I was younger. I am not quite at the 2-2-2 club but I usually limit a day to 500 miles unless I have a reason to push.
