15 Stealing alcohol before school

Been to residential for 9 weeks for benzos and drink. Back out and i’m off benzos but heavily on drink more than i was ever it’s became my new drug of choice. I don’t have money so i can’t afford to buy drugs and im not small of a fella to rob a dealer so my next best option is a shop. I normally go to aldis lidls or tescos i go down to back isle wait for it to be clear walk through the alcohol section and pants a bottle of wine. I’ve never been seen so far always did it in the blind eye. How long more before guards get involved.