Don't worry its actually a lot more normal than you think! Children tend to have less of a appetite as they get to about 12 months oddly. I would suggest to try not to spoon feed as often, allow your baby to feed himself by giving him small chunks of soft foods he can pick up or munch on as he holds it in his fist :)
can just prepare blw for your baby. Doesn't have to be porridge. chew on different taste n texture help to stimulate baby mouth to learn speaking. for breakfast doesn't have to be porridge or something heavy. Homemade Oatmeal or something like red bean paste will do well for nutrients and taste better.