CZ770 arrives at T1 at 10.05 am at Shanghai Pudong Airport.

And then I have a connecting flight from T2 NH920 from PVG to Tokyo. I have two separate tickets, so I assume I need to pass immigration, collect my luggage and then checkin for the Tokyo flight. Two questions:
1. How I can get from T1 to T2? Between the two flights I will have about 3h, I was wondering if it would be enough time for the immigration, checkin, etc.
2. For the PVG-Tokyo flight, should I checkin in T1 or T2?