Orthotics are worth every penny. Don't go cheap. I bought the $400 variety 6 years ago. Still working great. Since I've worn them I have had no further trouble with the plantar fasciitis. I run 2-4 days a week.I don't think they'll work with your Berkies, however. I'd lay off those for a while and ALWAYS wear your orthotics when on your feet until the symptoms disappear.
Truly, they're among the best health $ I've ever spent.
regards, Chance