Different surgical teams have different dilation schedules, and we will each have individual limitations and variables from our individual anatomy and surgical results.
In my particular case I advanced to the last dilator, the Soulsource Orange one, at about the 5 month point. I used the next largest dilator for a few minutes, and then moved to the orange one for a full 15 minutes as my surgical team specified for the first two weeks, and then just went right to the orange dilator.
With the smaller dilators besides simply inserting them I also moved them side to side a bit once at depth, which helped loosen the muscles at the entry and made it easier to move to the next larger dilator.
My particular schedule had me using the orange dilator twice a day until one yer post-op, and then once daily, which is the schedule I am now on. I can occasionally miss a day without any issues, as when traveling.