My boy recently started getting sore spots from the overuse of one of his feet. I temporarily put moleskin on most of his perches and the redness has decreased significantly.
I buy this long roll of moleskin from amazon that is sticky on one end, so its easy to wrap it around a perch and then change when necessary.
Of course my bird was at first hesitant to sit on the moleskin (like most budgies, he is not a fan of change), so I moleskin-ed many of his favorite spots and he quickly got over his fear of it.
Might be worth seeing if your little buddy gets some relief from a soft spot to sit on.
I also place a soft dish rag on top of the cage with avicakes and millet, and my boy likes to hang out on it and munch his snacks. I figure that also helps the little feets.