As a California medical cannabis patient, in order to be able to medicate while on probation, you should present a copy of your recommendation and print out a copy of People v. Tilehkooh for your probation officer to include in your file.
You can explain to your Probation Officer that this case states that medical marijuana patients who were not convicted of marijuana related charges should be permitted to possess, transport, and cultivate their medicine while on probation. If possible, try to create a written agreement with your Probation Officer.
If your Probation Officer refuses to accept your documentation, ask the Public Defender you had for your original offense to request a Probation Condition Modification Hearing. When you appear before a judge, present your recommendation with a copy of People v. Tilehkooh, and ask the judge for an affirmative order to be able to medicate.
As a medical cannabis patient on parole, all you need to legally be able to medicate is a State issued ID card from your county. Copy both sides of the card and give this to your Parole Officer to place in your file, along with a printed copy of the California Parole Policy.