Yes magic, thanks for the suggestion

My problem is when Force is connected before sense is connected

then the reading is junk unless there is proper measurement across the D.U.T and yes, I am monitoring the voltage across shunt and using the 10uA range to see when the voltage across the shunt goes to 1V which means the load is connected

I had a look at proper 1.024V voltage references (low drift and low noise) and they would be a bit more expensive than two resistors and a digital pot, although not that big of a difference. I really want this device to be extremely accurate at low cost and sell the first batch for very small profit margins (about 10% or so). This project was mainly for learning purposes and not as a commercial product as it has very limited functionality (low resistance measurement device) and I have learnt a lot thanks to this awesome community and people like you! I will try to talk to a professor at our university as well and ask for his opinion on the subject.
What do you think of it so far? I wanted to offer them for no profit (just the cost of parts and PCB + shipping) to people on the forum, let me know if you would like a unit yourself.