Actually, in a normal draft, the schedule typically calls for a round a day. The big difference here is that we're averaging 2 to 3 players selected per team, per round. I think that pace is fine, but there's a more efficient way to handle it.
Here's what I'd suggest for next time...
Everybody must have their 6 picks in by 8 pm each night. If they don't, then they simply choose 12 next players time. You would post the updated list no later than 10 pm. Then repeat this process each day.
This way, everybody knows all know the paramters. Some would send their next roster in at 10:30 that night, others might wait until 7 pm the next evening. Either way, everybody know the new list won't be updated until 10 pm. You don't have to continually check to see who's missing and send reminders. It would be up to each person to get his picks in on time.
Just a thought.