Dolly Parton has canceled her Las Vegas residency again amid ongoing health struggles. The 10-time Grammy Award winner took to Instagram on Monday to announce the news, while also sharing an update on her health. “Well hey there, it’s Dolly, and I am here to give you an update on a few things going on in my life. First, it’s concerning my health, and I have some good news and a little bad news. But the good news is, I’m responding really well to meds and treatments, and I’m improving everyday,” she said in the clip. “Now, the bad news is, it’s gonna take me a little while before I’m up to stage-performance level, because some of the meds and treatments make me a little bit swimmy headed, as my grandma used to say.” She continued, “And of course, I can’t be dizzy carrying around banjos, guitars and such on five-inch heels. And you know that I’m going to be wearing them. Not to mention, all those heavy rhinestone outfits, the big hair, my big… uh, personality.…