Got it in 3 today.
First word got me
Y w w G w
Used my second rando world
Y w G w w
So I have the letter in slot three and four and the two different letters I have must go in slot two or 5. Given the letters I know are gone, I have a good handle on which goes where.
I had several words to try. But instead of another throw away to test them I wanted that 3. So I put in the most commonly used of the bunch and got lucky.