If you read this section carefully, you can find that the case used in this section is somewhat different from yours.
"Mr. Chen’s six year H-1B visa is about to expire. Fortunately for him, he can change to H-4...", in this des-cription, "Mr. Chen six year H1 visa is about to expire" means his 6 yrear H1 visa does not expire yet though it will expire very soon. But in your case, your 6 year H1 had expired and you are in the 7th year H1. This is very different. That is why I said you might not get back to H1 if you change your H1 status to H4.
"Mr. Chen’s six year H-1B visa is about to expire. Fortunately for him, he can change to H-4...", in this des-cription, "Mr. Chen six year H1 visa is about to expire" means his 6 yrear H1 visa does not expire yet though it will expire very soon. But in your case, your 6 year H1 had expired and you are in the 7th year H1. This is very different. That is why I said you might not get back to H1 if you change your H1 status to H4.
