Add-PSSnapin microsoft.sharepoint.powershell
$SSA = Get-SPEnterpriseSearchServiceApplication
$SPContentSources = $SSA | Get-SPEnterpriseSearchCrawlContentSource | WHERE {$_.Type -eq "SharePoint"}
foreach ($cs in $SPContentSources)
{
$cs.EnableContinuousCrawls = $false
$cs.Update()
}