  We study the existence of $3-2-1$ foliations adapted to Reeb flows on the
tight $3$-sphere. These foliations admit precisely three binding orbits whose
Conley-Zehnder indices are $3$, $2$, and $1$, respectively. All regular leaves
are disks and annuli asymptotic to the binding orbits. Our main results provide
sufficient conditions for the existence of $3-2-1$ foliations with prescribed
binding orbits. We also exhibit a concrete Hamiltonian on $\mathbb{R}^4$
admitting $3-2-1$ foliations when restricted to suitable energy levels.
