Allocate 0% of resources of the project, and spend your remaining time with loved ones, see some wonders, give them experiences to remember you by, make things right, etc.
I'd go for a 3-month hike. Maybe try a big one like the Appalachian trail. Sure you need some money for a tent, good coat, camping stove etc. But the day-to-day costs for hiking are minimal.
Genuinely, if I had 8-12 weeks to live, the project would not be my priority, unless it was a welcome distraction. Prioritize whichever parts bring you joy, and do something about the 8-12 weeks if you can.