If a solution of p-aminophenol in alkali is neutralized with acid, a precipitate ,almost certainly the free base, is formed.
I have done this.
Metol in alkali is like p-aminophenol with an extra CH2 group,it probably has similar chemistry.

It may be that metol will dissolve eventually but not a myth that sulfite greatly slows the process down,and that this is due to the formation of metol base.It would be easy enough to test the rates of solution with and without sulfite.