I may not be understanding - looks like you are talking about before the invasion
I understood stepping back to mean stepping back from what has already transpired: The Joe Biden administration and the U.S. Congress have directed more than $75 billion in assistance to Ukraine, which includes humanitarian, financial, and military support, according to the Kiel Institute for the World Economy, a German research institute.Dec 8, 2023
How Much Aid Has the U.S. Sent Ukraine? Here Are Six Charts.