Queen Elizabeth reportedly made a concerted effort to save her energy during her Platinum Jubilee celebrations. The 96-year-old monarch has struggled with mobility issues over recent months, and royal expert Jonathan Sacerdoti has claimed that the Queen was determined to save her energy “as best she could”. Speaking about her approach to the Platinum Jubilee celebrations, he told Us Weekly: “She was working very hard to maintain her strength. “I think it’s totally understandable that she was saving her energy as best she could for all the events that she wanted to be at if she possibly could.”…