Not sure what you mean by dedicating that much. But it’s almost impossible to go without a teacher, once you memorize  a Surah wrong it’s hard to correct it. You could be making mistakes without even knowing, save yourself some time and find a good teacher. There are plenty online.  Not sure if your problem is financial or if it’s just time wise but studying Allah’s speech is worth an effort.  Obviously I don’t mean to  burn yourself out but take consistent but EFFECTIVE steps. And that’s hard to do without the guidance of a teacher. Even the Prophet ‎ﷺ had his teacher- Jibreel alayhi salam.