I don't think I'd start with a gram. Work up to it with all the Companion nutrients in place and plenty of salt and water to keep the bromine flowing. The fat has given plenty of storage space to all manner of detoxable toxins, and tolerance for detoxing may be low. Give them support, but remember that taking a break from Iodine is sometimes necessary when detox is overwhelming. Help them learn to ride with it when they can and to back off when necessary. A gram would be a lovely goal, though.