Loved One is Embarrassed to Go Out in Public
Go out with your loved one so you can be there to help them if you see they’re forgetting something.
Say the name of the person who is greeting them before they get embarrassed for forgetting.
If there is a particular activity they like to do, take them to that environment just so they can be surrounded with it. For example, if your father loved to golf, take him to a driving range or golf course to watch the other golfers.