How to make animated line follow shape

Im new to after effects and recently tried to do some line animation where ill make the line appear and tell some info about the dress. For the Line animation i used trim paths and keyframed the "End".  I want to extend the line so it keeps being connected with the circle. I managed to do o in the top line by keyframing the "start" of the trim paths but now that the orientation is switched (right to left insted of left to right) i can no longer extend it further than i need.

Hope i didnt overcomplicated the explanation, ill post a gif for reference.