Help with feeding both twins

Zana
Hey twin moms. My twins are ten days old and my mom has been helping me since my husband had to go back to work after the first week. There are going to be some days that she can not help and I want to keep my twins on the same feeding schedule. I am pumping so they are bottle fed due to some problems I had with breastfeeding. I tried to put one on a boppy and hold one and feed them at the same time. They are not too small for twins but still small and when I tried to do this, the one one the boppy got chocked. It scared me to death! Does anyone have any suggestions on how to feed twins at the same time so that I can do it by myself?