Twin movements

shai • Raising my rainbow daughter while growing her twin sisters🤍

Anyone ever knew which twin was moving? I’m pregnant with monodi (mo/di) twins I can feel their movement but I can’t tell who’s moving😭 currently 20 weeks pregnant I can feel movement in the upper area and the bottom. Assuming A is at the bottom and B is at top! Not sure if my theory is right .. anyone mind sharing how they were able to tell their movements apart?