I had the same reaction to the book. I love the content and the science behind it but it impacted my sleep for the worse.

Once I stopped worrying about whether I was having enough sleep every night, I got back to my previous, not ideal but better, sleep patterns.

Being a night person I just wish I could wake up late rather than having to be up early for work but it's better to sleep well for 5-6h than really badly for 3-4h.