Mindfulness while reading/studying

Hi, so I'm trying to remember to remember to be mindful in daily life. Brushing my teeth, eating, walking, yet I cannot quite figure out how I'm supposed to be mindful when I'm reading, studying, or doing anything that directly involves the mind.

Am I supposed to focus on my breath/body and the words at the same time. Or am I supposed to try to concentrate only on the words, because that's what I've been doing for years and that hasn't been working out so well.

I've been looking for information on the internet, but all I could find was exercices to do before or praises about mindful reading without further explanations. So, can anyone do this or know how this is supposed to work? I'd really love your input, thanks!