It is rarely the content itself
The instinct is to blame burnout on posting too often, and sometimes that's part of it. More often the cause is the absence of any real stop: checking metrics right after posting, replying to comments the moment they arrive, worrying about tomorrow's post before today's has landed. The content is the visible part. The constant low-level monitoring around it is what wears people down.
Batching content and batching your attention are different fixes
Batching content (making several posts in one sitting) helps with time. It does nothing for the second problem, which is checking in on every post as it goes out. Set specific times to look at comments and metrics, rather than treating your notifications as an open invitation.
A schedule you can see end-to-end reduces the load
Part of the background anxiety is not knowing what's coming: a mental list of "I still need to post about X" that never fully empties. A calendar you can look at and see filled two weeks out removes that particular worry, even before any of those posts go live.
A missed day is not a crisis
One of the more durable fixes is deciding in advance that a missed day, or even a missed week, is not the emergency it feels like in the moment. Most audiences do not notice a short gap the way the person posting assumes they will. Treating consistency as a general pattern rather than a daily perfect streak removes a lot of the pressure that leads to burnout in the first place.