The Council shall hold a public hearing before adopting all or part of the plan. At least 60 days before the public hearing, the Council shall submit the plan to the Department of Planning and to the local planning commissions, and the governing body of each political subdivision in the region. The Council shall publish notice of the hearing in newspapers of general circulation in each county in the region, at least once each week for 3 weeks before the hearing. On or before the date of the hearing: the Department of Planning may recommend to the Council changes needed in the plan to conform it to State plans and policies; and each local planning commission and governing body of each political subdivision in the region may make recommendations to the Council on the effect of the plan in the political subdivision. The Council shall reevaluate the plan for the development of the region at least every 4 years.