All communities are doing very well. The idea to engage users is very well, but I wanna suggest something here;
In steemit crypto academy the whole season is having total of 50 entries, in entire season from week 1 to 6. Or just little more than 70 entries.
On the other hand the other communities easily get this target in one week in the form of entries.
That's because of hardness of topics in crypto academy. And I am pretty sure, no one is learning anything, there is just a research, and post only. The topics are also not understandable, and getting harder slowly.
Secondly, most of time I face no review by any moderator on my post, in engagement challenges. In the previous week my post in Healthy Steem Community didn't got a review.;

https://steemit.com/hive-168205/@growwithme/steemit-engagement-challenge-s13w2-protect-your-mental-health-from-social-media-dangers

So there are many things to be corrected.