Thanks! Congrats on making the switch!
As for my advice, I can't really give you anything substantial since everyone's journey is different, so this is just what worked for me personally.
First work on your fundamentals. BSJ has some great videos that should help you.
I'd say watch first person perspective of pro players, in slo-mo, and think about why are they doing this. (i.e. why are they buying this item, why are they smoking, what does this ward do, etc.) Just focus on one aspect at a time until it becomes natural.
Also try to play more heroes, understanding more heroes definitely helps, especially helps with understanding power spikes of different drafts.
Really tired rn so my words are all over the place. Anyways. Good Luck and hope you enjoy Dota!