How do you reestablish DI?

Slowly and carefully.  You need to pick and choose your previous DI strategies and maybe even modify some.  We are still in the process of doing this ourselves.  We have found that we use DI unexpectedly much more often than we would in the past.  We identify when students need manipulative's, alternate explanations, modeling, etc... during the conferencing.  I actually do more DI now than I did before, it just looks a lot different.