As the state’s budget crisis worsens, Washington’s colleges and universities are being told to plan for $600 million in cuts over the next two years, a loss that would mean program cuts, layoffs and enrollment reductions. “We’re just asking them to prepare for us a plan that they could use to reach a 20 percent cut,” said Glenn Kuper, spokesman for the state’s Office of Financial Management. “We don’t know yet how all the cuts are going to be apportioned out, but we want to have those options in front of us.