Ok, you cannot tell freon level by pressures. You need to have the freon removed from the system completely, evacuate the system of all moisture with a vacuum pump and then re charge with the correct amount. There should be a tag on the radiator support or firewall telling you the amount. Then you need to run the car as you install the exact amount required.
2002 Toyota Camry SE Sedan V6-3.0L (1MZ-FE)
Vehicle  Specifications  Capacity Specifications  Refrigerant
Capacity Standard: 550 +/- 50 g(19.37 +/- 1.76 oz.)
Monday, June 27th, 2016 AT 3:49 PM