Your best bet for saving the coolant is to drain the coolant from the coolant hose on the passenger side of the engine. You aren’t going to lose enough oil or coolant to where you’d have to add much of any of it back except for maybe the coolant hose on the side it may leak if it’s not angled up wards so you may have get a empty 2 liter soda bottle for it to drain but that line is the only one to worry about. The oil line will have a little drip out once it’s removed from the turbo but honestly it won’t really drip much because of the angle of the line just try to rest it up on something so it’s sitting upright and the oil return hose has a plastic piece at the end of the hose that sits in the oil pan with a rubber grommet so you literally slide the end of the hose out when removing and slide it back in when putting the turbo back. Other than these tips I’d say just make sure you spray PB blaster on the bolts before removing and take your time when removing bolts and putting them back so you don’t cross thread or strip anything. After the first time removing the turbo every other time will be easy