There are lots of tips out there, especially on Instagram. Here’s a good one: https://www.instagram.com/reel/Cq508xvABjv/?igsh=MWgyZzJqcWNiM2s5NA==
Bring little toys and snacks. That age is tough. They’re just very wiggly and not old enough for screens anyway. I use a drop down travel toiketry bag that I hang from the seat in front of us or the tray table lock so it’s easy to access little toys.