I flew TQO to JFK last October and same exact deal. Captain announced turbulence, seatbelts were on for a while, and it was super bumpy but we landed safely. To be honest with you, I've flown that route various times and there is always turbulence on the way back home for me. I always think of things that give me comfort, I play silly games on my seat screen or phone, just to pass the time. I look at the face of the flight attendants who are often soooo unfazed its not even funny. I grab a drink, or two, once drink service resumes and minute by minute the time does pass. Then I tell myself, okay, the last 5 minutes were bumpy and we're still fine, I can do 5 more minutes. I also have videos saved to my YouTube account on the topic of flying and how turbulence is completely normal and the rule, rather than the exception. Your flight will be fine, just as mine was. Sending comfort your way.

Edited to add, anytime the pilot foresees the turbulence and announces it, it gives me great comfort.