Switch to Sky Q or Sky Stream.
Sky Q uses your existing dish and Sky Stream uses your internet connection (if it’s fast enough). Both allow extra boxes to provide TV in the other rooms.
I have Sky in my lounge and pucks in 2 bedrooms using Stream and have no problems whatsoever.
The signal is internally distributed by the Sky router, but they provide extenders for free if there is a signal issue.
Next day delivery.
https://www.sky.com/tv