Delete AmazonCloudWatch from expiring Free Tier account

I've received a notification that my Free Tier is expiring and I should delete all active services to avoid getting billed. I see AmazonCloudWatch as the only service in my Billing dashboard. I went into the Management Console, Cloudwatch and found 2 logs which I deleted. But I also see 3 "Automatic dashboards" which I have found no way to delete. I've read the instructions but they are not clear if/what to do with them. I need a confirmation that there's nothing more to delete and that I will not get billed past my Free Tier expiration. How do I get that? Thank you!