Hello! I am 2c/3a also, and I've been doing CG for about a month now.
Our porosity is different, but I'll try to give you advice. At first, my hair was GREAT! It was super shiny and bouncy. However, it starting getting frizzy and soft, which meant I was overconditioned. Also, it was SO greasy! I clarified my hair. I figured shampoo would be better for my hair, but MAN my hair was soooooo dried out! I decided to do Apple Cider Vinegar rinses. They worked well with cleaning without stripping, but the problem was I could only do it once a week. ACVs are awesome, but too often can damage hair because of the acid.
At this point, I didn't know what to do. Then I checked my cabinet! I tried adding 20 drops of tea tree oil to 16 oz of water in a spray bottle, and I sprayed a few sprays onto my scalp and hair. Yay! Soft, happy, CLEAN hair again. Tea tree rinses are really good because they're like ACVs that you can do every day. They help with dandruff too. But then, my hair started getting dry again :/
I got a super gentle shampoo because I figured CG wasn't for me. I used a deep conditioner and moisturizing styler to finally get moisture into my hair, but it was dryer than ever. Everything was drying me out and making me frizzy! This was about a week or two weeks ago.
I went back to cowashing again, and now my hair is so happy! For good this time, though. I think my scalp finally got used no shampoo and producing less oil. If I need a extra dose of moisture now, I combine honey with my cowash.
I highly recommend Darcy's Botanicals products in my signature. They're amazing for CG!
If you are high porosity, your hair might like protein. As a cowash, Cure Care from Sally's is wonderful because it is light enough to clean yet has a nice amount of protein. It wasn't for me because my hair doesn't like protein too much, but others with high porosity like it a lot.
CG takes about a month to get a hang of, but keep with it!