Weed is really sneaky, I also get slowly addicted.

Get a routine instead. Take your meds, then go jogging.

Tell somebody you trust about your addiction and give them all your stuff. Also tell them who you meet to buy it.

That would be a solution that probably works but is hard. Everything else doesnt work, like hiding from yourself, if nobody is there to look after you.

ADHD and self control are not really working out.

You may also create a calendar and cross a day a month, thats it. The other days are sober.