Started with 20mg 5 months ago down to 10mg pred feel winded easily does this get better with remis

It will get better as your dose reduces. But the ease of fatigue is almost entirely to do with the PMR - the pred only manages the inflammation to reduce the symptoms. The cause of the inflammation is an underlying autoimmune disorder that makes your immune system unable to recognise your body as self - and that continues even while you are on pred. Just like "cold remedies" stop your nose running and maybe make you feel a bit better but the viral infection still makes you feel rubbish. 

Some people don't have healing problems - I don't for example - but many do and also their skin is very fragile, tearing very easily. You might find that using arnica helps - lots of us do.

And remission may be a very long way away - you have to learn to pace yourself and "manage your spoons" in the meantime. This is a link to our reading list:

https://patient.info/forums/discuss/pmr-gca-website-addresses-and-resources-35316

Right at the bottom you will find a link to another post about pacing. And google the spoons theory by Christina Miseriando for an allegory to help living with chronic illness.

My story is almost exactly like yours, just hurt my leg instead of hip.  I lost a lot of muscle at first - the only thing that I found for me was to consume huge amounts of protein - maybe 400 gms per day or more.  That helped slow the muscle loss, but I am still weaker than before, even after working out three times per week.  Aerobic is harder - same problem as yours. I am just trying to push through it - using the Stairmaster twice a week for twenty minutes, plus walking. My orthopedic surgeon told me to consider seeing an anti-aging doc and talk to them about GH to rebuild the muscle loss. I am now down to 4 mg, scheduled to go to 3 in two weeks.  Pain is mimimal, but more that when I was at 10 mg.​ Good luck.