I drank both green and Thai coconut, but not so frequent. I drank green coconut when I went back to Indonesia for Christmas holiday and Thai coconut when in Singapore. I think most coconut supply readily available in supermarket here I'd Thai coconut. I think you may have to go to fruit sellers in market if you want to buy green coconut. I started drinking coconut when I was around 5 months pregnant. So I think you can start drinking now. I only drank maybe once every 2 weeks. But I also drank birds nest, not so frequently also, about once every 2 weeks. Even not drinking so frequently my baby boy skin is pretty fair 😬
I heard that should take the big one. Chinese belief to start last 4 weeks to 'clean' baby, not sure what it means, but maybe the white substance on NB skin