Have you asked your vet?
yes but doctor say its normal :/
I would not worry if the Vet says his coat is normal, but I think washing him once a month is excessive and probably is stripping his coat of the natural oils.
you are giving him an excellent food and good supplements but i would recommend not using the furminator. My breeder and few other breeders/showers say that brush destroys the coat. When baden was younger i too was worried about why his coat was so course compared to other corgis i have petted. When i talked to them about it and they told me, i stopped using the brush. its took time for his "new" coat to come in but once it did he was much softer.
a stickler brush, greyhound comb, and the zoom groom work with the coat and promote the spread of healthy oils and growth
ooooh!!! maybe that was why!! I haven;t been using furminator for quite a while and now his fur is super soft. although it might also be something to do with changing his shampoo, adding omega 3 oil etc..not sure. but he is doing very good now!