Sounds like your doing a great job. I eat lactation cookie dough almost every day. It's more effective eaten raw, you just leave out the baking soda and eggs.
I like to swap half the flour for almond meal. It gives a nice texture and increases the protein of the dough.
It's good to also play around with different varieties.
I notice a big difference in my milk supply when I eat the dough compared to when I don't eat it.
Have you considered also taking motilium to help boost your supply? Fenugreek is also great for boosting supply.
Good luck, and good on you :-)