Record animation

Hello I have a few animations for animated sci-fi doors.
It contain 4 stored animations in one animation sequence and I would like to divide these keyframes for these four single animations.
Okey so what I need to do is start from 0 keyframe and press red record button to save custom animation but it’s not easy to stop record at specific key because this whole animation is really short and I can’t do this, it’s happen so fast when I want to record some part of this animation.