From bm cannabis to just oil

Has anyone successfully done this? I’ve smoked joints for years and now since being prescribed medical cannabis and oil with the hope i will come off joints and just be taking the oil I’m finding it impossible. I simply can’t transition from joints to vaping no matter how hard I’ve tried and the price of it along with the oil which i think i need a higher dose than the 50mg thc as I’m not feeling it is just ridiculous. Any advice please? Has anyone successfully just ended up taking the oil?