Do you have tips for slow eating?

I always was a slow eater. Until I worked at a school for a year where the kids and I only had 15 minutes to eat in total (standing in the queue and cleaning the table afterwards included). I always was under great stress when eating because I had to manage 30-60 kids, mediate between them and in my head already planned the next task.

Now I've stopped working there a month ago but I noticed how I still eat really fast at home. It usually takes me 10 minutes to finish a meal. Back when I was younger I always needed between 30 and 90 minutes to finish the same portion. I really want to go back to that!

I am posting this here because the usual tips don't really help me. When I had a healthy eating habit I often ate in front of the TV or computer because the distraction would prevent that I see eating as a task that needs to be done quickly. When I sit alone at the dining table, I catch myself thinking about how bored I am and that I quickly want to finish my meal so I can move on and do more entertaining things.