I just add an egg to my fave deep conditioner. Its never on a set schedule just really when I feel shedding and breakage are too much.
A lot of people use the Aphoghee 2 step. Check You tube videos.
I use aubrey organics GPB and ORS hair mayo(occassionally). GPB is my fav, I can get away with using it every week, it is very mild.
I use Aphogee 2-step every 6 weeks, and either the 2 min reconstructor, AO GPB, or Joico KPak every week. I follow the 2-step with a heavy moisturizing DC
From the above you can see, many do different things. I go agree that naturals that don't use heat to straight on the regular, and that don't have color or handle their hair roughly, don't really need heavy protein. A light protein should suffice.
I am a 4b as well and I don't use protein because I've noticed that my hair does not need extra protein. Since you're a new natural, I would recommend that you watch your hair and see how it reacts to light protein before using protein on a regular basis. Coconut oil behaves like a light protein and my hair can't stand it
YUP, basically, YOU have to find what works for you! Trial and error. IMHO, I would start with a light protein, like adding egg to your DC mix, or adding mayo as a DC ( not like miracle whip, but mayo with eggs, oil and vinegar from the store or you can get a recipe on-line ) an see how that works.
For me, I still have color in my hair closer to the ends. Before I use any protein, I will clarify, then I will use Aphogee 2 step 4 times a year at the most, or I will henna 2-3 times a year instead. I have protein as a preventive on a set schedule. If I just want a light protein I do the mayo or eggs. IDK, you just have to see what works. Regardless of what you choose for protein, ALWAYS follow up with a DC. If you find that your strands are hard after, that (again IMHO ) is a sign that the protein was too much for your hair. Your hair should not feel hard after your protein and DC tx ( treatment ) HTH, good luck to you