due to lock down as there is more time for jee mains 2020 phase 2 exams, does this question paper will be more difficult?

Hello,
No no ... There is nothing like that. Paper might get easy but won't get difficult. Easy in the sense solved and scored good mark by high number of candidates.
To solve a question, tricks are used to minimize the time per question. Which trick works where is difficult to Know untill you practice well.
So practice well and plan to solve the questions in limited time accurately.
Hope it helps!