The Red Sox lost way more than an hour’s sleep because of daylight saving time yesterday. They also lost any realistic shot that David Ortiz is going to be ready in time for Opening Day on April 1. And pegging a realistic date for when Ortiz is actually going to play has become a big ol’ waste of time, because the only thing we’ve learned this spring training about his 2012 injury is that it is taking a l-o-o-n-n-n-g-g-g time to heal. The discomfort Ortiz is feeling in his right heel is the result of “inflammation in the bony area of the heel,” manager John Farrell said in Port Charlotte, Fla., after a 6-2 victory yesterday against the Tampa Bay Rays. “As a result, we’re going to shut him down for a few days here to let that quiet down completely before we start to initiate any kind of baseball activities after that.” Once an abstract idea a week ago, Ortiz’ Opening Day absence was all but cemented into a cold, hard fact of life once the manager relayed initial word about the results from the designated hitter’s MRI taken Saturday. This news is not encouraging. Everyone can stop counting days for Ortiz’ return. It will be easier to count in weeks. Maybe months. Farrell said Ortiz would be shut down for 5-7 days.