Having a 1x drivetrain in my Trek Xcaliber and living up a steep hill, when changing up gears I have to sit down, do a pedal stroke like just letting the weight

Having a 1x drivetrain in my Trek Xcaliber and living up a steep hill, when changing up gears I have to sit down, do a pedal stroke like just letting the weight of my leg press the pedal and switch gear at the same time to avoid that hard snap in the chain. A little inconvenience but it does the trick, it changes smoothly