In a word NO.
Simple spacial concepts, You can adapt a hole to accept a smaller peg, but not the other way around.
The lower end of your head tube is sized for a 1-1/8" steerer and cannot be made bigger to accept one 1-1/2" in diameter.
It's possible that I'm misreading your post, but if not, and if you're going to a larger steerer, you're SOL.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.