If this description is ALL you do then you need to massage your scalp while you're putting in the conditioner too. Letting the conditioner just sit there won't clean your scalp, just like with hand washing its the friction that removes dirt & oil, the soap, conditioner, whatever just helps it rinse away easier.
I rotate conditioners/co-washes but my routine is always about the same. I wet my hair, add some co-wash to my ends then distribute a generous amount on my head, top to nape, and start working that through. I then add more conditioner to my palm and rub it on my fingertips and massage it into my scalp with pads of my fingers (no nails!). I keep massaging all over my scalp until it feels slick and my fingers are going numb
I then rinse while still masaging and add more/different conditioner to sit for a rinse out condish.
There is a good description in the Curly Girl book and on this website, probably YouTube too. But the main thing is to rub/massage your scalp. You may want to lo-poo or clarify to get a clean slate at this point. I lo-poo about once a week when I PT & DT.