Givental-type genus-zero mirror symmetry conjecture for the small FJRW I-function

Let $(W,\langle J\rangle)$ be an admissible LG pair, and let $I_{\rm FJRW}^{\rm sm}(t,-z)$ be its small FJRW $I$-function. Let $\tau(t)$ be defined by the coefficient of $z^0$ in the small $I$-function, and let $J(\tau(t),-z)$ be the corresponding $J$-function. Genus-zero mirror symmetry conjecture. The small $I$-function $I_{\rm FJRW}^{\rm sm}(t,-z)$ lies on the Lagrangian cone. In particular, there is a formal power series $c(t,z)$ in $t$ and $z$ such that

$$tJ(\tau(t),-z)=I_{\rm FJRW}^{\rm sm}(t,-z)+c(t,z)z\frac{\partial I_{\rm FJRW}^{\rm sm}(t,-z)}{\partial t}.$$

This strengthens the preceding special-case mirror formula to a statement that the small $I$-function lies on the genus-zero FJRW Lagrangian cone; the source gives no resolution.