My hair is similar, but no longer dense (age, thyroid and a medication I take.) I use small amounts of really rich products. Never have to DT. My hair loves protein. Do one PT a week and use a lot of products with protein. If you use a PT like CJ Repair Me, you may not need to DT. Many of us don't.
3a (Corkicelli), highlighted, fine, low porosity

HGs: Anything Sevi; Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; UFD Curly Magic (now Hello Curly Curl Stimulater); Botanical Spirits Jellies, CJ Repair Me, Aloe Fix