I usually break them up because they exceed Tapas’ 15k character limit. If I write a chapter that is under that limit I’ll do the whole thing in one update and upload it on my usual Mondays. If it’s broken into two, I’ll do a Monday and a Wednesday. If it exceeds 30k I’ll either try to clip it, add the end into the beginning of the next one, or I’ll do three updates that week (Monday, Wednesday, and Friday).