Yeah, we've tried to research quite a bit, but there's not much information when it comes to this style of shed - we're kind of going off of other YouTubers who are also concerned with the ventilation in their coops similar to ours. It's also difficult to find workable solutions and exactly how much is necessary. I understand that they need about 1sq ft per chicken, but how to accommodate that with our new coop isn't mapped out exactly, which makes it kind of a guessing game. We thought adding the air filtration system would definitely help, and you can feel a lot more airflow out of the vents now that we added it, but it still seems like we should be doing more.
Thank you for the well wishes with our chicks! It was a rough start, but things seem to be going smoothly now, so knock on wood we can keep it that way!