Advice for a beginner runner.

m20 72kg skinny fat,

Now doing about 4kms at 8mins/km. Running on alternate days and doing beginner bodyweight exercises on other days. When I run, I try to run about 3.2km at easy pace where I can talk and breathe easily and last 800m at a higher speed.

I need advice on progressing from my current state to an intermediate runner within a span of 12 months. I always used to think that my body isn't made for running, so never took part in running while I was in school. Now I'm kinda taking interest in trekking and marathons, so decided to get into it.

ps: I'm 5'8 and use a cult blazon shoe. Also I've noticed I sweat quite less compared to other people I've seen. It takes me about 1.5-2km of jog to start sweating a little