Trust Account from an Estate-Minor Child

My mother passed away in 2024.  She requested that a trust fund be set up for my minor grandchild.  He can obtain the monies when he reaches 21.  Myself and my sister and the Co-Trustees under the will of my mother.  I received a 199-INT for $43.00 in interest.  I am unsure if I should file a 1041 with a Schedule K-1. 

 

I did research the community but was unable to find a definitive answer.

 

Thank you