Impressions dropping like a stone

Hi folks,

I'm posting on LI to drive engagement to my Substack. I've got around 4k followers on LI and when I was posting earlier in 2025, I got a decent number of impressions. Took a break midyear and began posting again at the end of the year. Same types of posts, link always in comments and impressions have more than halved.

Any advice or does the algo just hate me now?