Increased number of (quality) posts is the first prerequisite to increase amount of merit and looks like you are working towards that. If you check some of my first overviews I did, Indonesian board was already in decline, but merit shared number stayed quite high, but as number of posts was decreasing, so was merit, which culminated in December. You drop was so significant that even members from other boards noticed that, like @fillippone in one of his earlier posts in this thread. Hopefully January wasn't just an exception and you are getting back on track.