Thanks for your interest in the project!
I remember that Trinacoin was projected to mine a block every two minutes, almost twice Litecoin, so it's normal that the number of blocks increase so much.
And the difficulty adjustment come every 3 days, so every:

2160
4320
6480
8640
10800
12960
15120
Blocks

... and so on.

It's working exactly as projected. We want the transactions at maximum speed.