Ziplok
What would you like King Charles to do, exactly Sarnia? As previous posters say, he is not his brother’s keeper. He is not responsible for his siblings behaviour and he has already made it apparent that Andrew can no longer be a working royal. Other than that, he can’t really do anything - he’s not Henry V111, after all!
I think the proposed move to Frogmore Cottage should go ahead. It was reported that Andrew did not consider it grand enough but with the York's spendthrift ways and the very real prospect of his ex-wife not being in demand for lucrative events, cutting their coat to suit their cloth would be a good idea.
Both of them should fade into the background.