Hey Korrit! First of all, I'm gonna tell you about Kudos. When I was just a young junkie in my little sailor outfit going to grade school every day, my mom would pack these things in my lunch called Kudos bars. They were basically like candy. Think of a wicked good granola bar covered in chocolate. Eventually my mom started buying "Mini Kudos". They were great, just like the regular sized Kudos bars, but... miniature.
What's this crazy asshole rambling on about? Well, the fact is that your desire to practice responsible usage and Harm Reduction warrants a Kudos. However, this Kudos is of the miniature variety for a couple of reasons. Basically, the fact that you are thinking about Codeine, looking forward to it, concerned with it... you like it, that's the main takeaway here. Not the frequency. Not the dosage. Not any of that really. You like Codeine and the longest journeys always begin with a single step.
My first thought when I felt Opioids? I am home. How can I stay here permanently? If I do A, B and C then I will be fine. If I do this, that and the other thing, I won't become dependent. The psychological dependence comes way, way before any true physical symptoms. Even before you develop your first sickness, long before that, you will have developed a pretty serious psychological compulsion to use Opioids. If not using them, thinking about them.
I'm not trying to say I know everything about you and I can predict your every move, but I don't want to give you anything other than the straight shit here. You are being safe. I support you, but only a fool believes that they're the one who can make it work. Of course, there are people who can. There are also people who get struck by lightning, eaten by sharks and win the lottery.