From my experience, I haven't heard of any specific trick regarding timing for Manali bikes in Ladakh. However, it's true that early mornings usually see less traffic and checkpoints might be less stringent. Yet, I'd recommend ensuring all your documents and permits are in order regardless of the time you start your journey. Additionally, it's crucial to acclimatize properly and have a well-maintained bike for the challenging terrain of Ladakh. It's always wise to stay updated with the latest regulations and local advice for a smoother and safer journey.
I've heard about that trick, too, but I haven't tried it myself. When I went to Leh on a bike from Manali, we started early and didn't have any issues. It's a beautiful ride, but make sure your bike is in good condition. I love riding bicycles, especially abroad. Our family traveled to Amsterdam last year to enjoy cycling in the beautiful city. However, we were a little worried about the safety level of the town, so we checked out the safest parts of it at https://www.travelsafe-abroad.com/united-states/pittsburgh/. You should check it out, too, if you're planning to travel. Safety first, guys!