I've split finished databases before and understand how and the benefits of doing so. I have a project right now where I'm sequentially adding departments to a database. Right now, the first one is finished and I'm ready to move to the second. The first department (that's already functional in the database) will have 3 users that will work in it for about a day each month. I'm not sure if I need to make the split now and then manage the FE & BE separately as I add the next department or if it's better to wait and split it later since I'm only 1/7 of the way done with the whole project. It seems like it'll be easier for dept 1 to have FEs to use, but that it might be a pain for me to build the rest of the database swapping back & forth between the FE & BE. I'm looking for advice about the timing of splitting and everything I Google seems to just make the case that it should be done, but I can't find a decision tree about deciding when the best time is to do it.