i just noticed that you havent got alot of comments on your pictures like you used.

たった今あなたの写真にコメントの数が少ないのに気がついた！以前はたくさんコメントしてもらえてたのに！

you havent を you dontにしたほうがいいですか？
英語に自信ある人助けて＞。＜

you havent で充分通じると思いますが・・・

I just noticed that you haven’t received many comments on your pic, like before!

I just realized you haven’t had lots of comments from other.....what happen?/like you used to/like before 　

I just noticed that lately you have not been getting a lot of comments on your pictures like you used to.