Could Loss Of Appetite And Sleeplessness Be The Withdrawal Symptoms Of Suboxone?

I know someone who has a major pill issue the doctor prescribed suboxin and they have been trying to get off the suboxin in addition this person also abuses adderal (they crush and snort it) - is there any advise you can give. they stopped taking the pills 3 days ago - cant eat, sleep or concentrate - they have self diagnosed themselves with g1530a because they were told I they may experience high blood pressure - this person is a loved one and I do not know how to help them any advise