There is no shortage of good info out there for Passover- you just have to know where to look.
Here are a few web sites that we have found helpful.
The guide covers both medical issues that arise for people with
diabetes during Passover, as well as relevant issues of Jewish law
arising from the medical needs of those with diabetes.
These matzos – under the strict Hashgacha of Dayan Osher Westheim of
Manchester Beth Din – are made from a special strain of oats that
have a high fibre content and are completely free of gluten and
gliadin. See website for more information.