Reddit reviews Treasure Island (Signet Classics)

Pacing is not something that is easy to achieve. It takes quite a long time to develop solid story pacing.

I, unfortunately, do not have any specific advice to offer you. I do, however, know of an author who is exceptionally good at it. Robert Louis Stevenson, author of Treasure Island. The book is out of copyright and falls under classic literature, so you can pick it up for free online from Amazon(I've read it twice on my kindle, for nostalgia's sake.)

This particular story flows from one element to another. I won't say its seamless, but it's about as close as I've ever seen done.

If you've never read it before, use some of your wind-down/spare time reading it. It's geared towards a relatively young audience, but it's still a good read, and it might help you pick up some pacing tricks.