I was striving to knowing more about how to prepare my food, what kind of food I need to consume and so forth.
After long time enough of following doctors on media I, finally, can decide on food.
In a more informal way in English:
I was trying to learn more about how to prepare my food, what kind of food I need to eat and so on.
After a long time of following doctors in the media, I have finally decided on what to eat.