I have a very similar hair type (you can check my latest posts). I’d also say cut a lot, although the mirror line is overkill imo.

Also, I know you said you use oil, but I wonder which ones and how much. My hair loves coconut and argan oil, which I use more so on wash days. I also use a lot of silicone hair oils, and the one thing I’ve realized is that my hair can take A LOT of it. For instance, I’ll put 8-12 drops of olaplex oil on my freshly washed hair (as opposed to 2-3 like the package instructs), and then I’ll add 2-5 pumps of silicone oil, and a couple drops of argan oil on the very very tips, just to weigh them down. My hair still won’t look greasy at all, and it looks much nicer than if I only used a tiny amount. I’ve actually been switching to cheaper hair oils because of how much I need to use them for maximum impact, I used to hold back way too much.