Complex sentence: In September 2007, Abbado announced that he was cancelling all of his forthcoming conducting engagements for the "near future", on the advice of his physicians but two months later he resumed conducting concerts with an engagement in Bologna.
Split into simpler sentences: In September 2007, Abbado announced that he was cancelling all of his forthcoming conducting engagements for the "near future", on the advice of his physicians. In November 2007, Abbado resumed conducting concerts with an engagement in Bologna.