I would keep putting ointment on your tat as much as possible. It probably has scabbed over quicker because its in an area that has a wide range of motion.. not so stationary as the rest of your back.
Keep the ointment on there, and don’t worry about the scabbing, that’s normal. Just make sure it doesn’t turn into an infection. I don’t think you will ruin anything by turning your head and what not throughout the day, but your tattoo artist will better prepare you for that than I can.
My best advice is to keep the ointment on there and try to keep your shirt off of it for a few days.. Use gauze if you have to.. its cotton and it’ll breath still without the rubbing.