I once planned to make 20 comments a day, not just comments limited to "great, thanks", but more comments that have interaction. This takes time and commitment, I also have to read the entire post to understand in order to be able to comment.

The most difficult part is commitment, as you said, and also don't set too high a target, like 20 comments a day, 10 comments I think is more than enough and very good for engagement. I will try it.