The difficulty level of viteee questions is surely much less than that of jee mains. On a scale of 10, if jee main is 8 then viteee would be 3 or 4, as I feel.
What makes viteee a bit challenging is to manage time. You have to do 125 questions in 2.5 hours. So even if you know the solution, you may end up guessing the answer as the time is less.
Hope that helped 🙂