\documentclass[a4paper,10pt]{article}
\usepackage{myXsim}

\author{Benjamin Bertrand}
\title{Équation différentielle - Exercices}
\date{Mai 2021}

\DeclareExerciseCollection{banque}
\xsimsetup{
    step=2,
}

\pagestyle{empty}

\begin{document}

\input{exercises.tex}

\printcollection{banque}
\vfill
\printcollection{banque}

\end{document}