I'm not sure if you still want to know, but I've done that for a long time. I bought a conditioner that has lots of oils because I was convinced I had coarse hair, but it didn't do anything for me other than making it supersoft and weighed down. That way, I discovered I had fine hair and that I had low porosity. It simply didn't penetrate the hair shaft, leaving me overconditioned all the time. After long consideration, I ordered Aubrey Organics GPB, which works well, but in-between, I just low-pood. I didn't even use a LI because I don't have one (and I don't think I need one - it would probably weigh down my hair even more). My hair got perkier, though slightly on the dry side.
F - LP - HD - NE
Fine, low porosity, high density, normal elasticity
Hairtype 2c

Low poo: Petal Fresh Organics Rosemary & Mint Volumizing Shampoo
Protein: Colorful Neutral Protein Filler
Detangler/RO: KCKT (winter) or Curl Junkie Beauticurls Argan & Olive Oil (summer)
Styling: KCCC

Beauty Is Not a Number