Low Power Steering Fluid

Hello everyone. My power steering fluid level is very low and it hasn’t been changed since purchase of the car. Should I just top up or get it flushed? Which toyota fluid to use?

Toyota Land Cruiser V8 ZX Year of Manufacture: 2009 Model: CBA-URJ202W Engine: 1UR-FE Current Mileage: 115,000 km Fluid Color: Clear red/pink

Picture reference when engine is cold. Thank you!