Help! I moved to Louisiana and put my hoya outside and the leaves are browning and dieing. This is happening pretty rapidly, over 2 or 3 days for the browning. My picture sucks but it is pretty widespread on the plant
Seems to me like you know what is happening to your plant already by the phrase "I put my hoya outside".
Some plants can be outside, but if they are used to be inside and you change environment very quickly without adaptation period, they suffer. Yours seems like it got burned from the sun.
In any case hoya are resilient if they are a big plant like yours, just put it back where it was and keep taking care of it the same as before and it should recover. Try to not baby it in excess or overwater the plant, just leave it be and heal.