add keyframe to all the defaults you want to keep on the very 1st keyframe and when you want to "reset" it on the same timeline you can click them on the beginning, drag the timeline to the point where you want them reset and click "duplicate keyframe"... might be tedious but works
another way is to create multiple animations inside the same animation player, being one of them "default" so you can duplicate and work with
a simple way to call for them in order on code is to yeild() one to finish before the other is called
also remember to drag the timeline to 0 when you switch animation coz the values will be kept if you switch animation in the middle of a tween timeline