How do I process the minimap quickly?

Hi, I'm a Silver player. I think to have identified two main problems I'm having. Firstly I have bad mechanics (both motorically and with split-second-decisions). Secondly, I use the minimap far too poorly.

I don't know a way of improving the former, so I started working on the latter. I have tried using a timer that ticks once every 5 seconds, reminding me to look at the minimap. However, I noticed me slipping into looking at the minimap without actually processing it or ignoring the ticking alltogether.

When I look at the minimap and do process it, it takes me 1 or 2 seconds to understand where all the champions I'm seing are and where there's two champions overlapping or only one. Please take a moment to realize how long two seconds are.

I find this really daunting. Do you have any tips on how to speed up that thought process, or what I may be doing wrong?