We only have two, but we do the whole bedtime routine together. We read books on my son's bed since he has a full size bed, they each brush their teeth and then we brush each of their teeth, then we read another story then hugs and kisses all around then bed. My daughter is 27 months and we have been doing a combined bedtime routine since she stopped nursing before bed at about 15 months. They take turns sitting in our laps for their stories, so whoever picked out the story gets to sit in your lap, the other one sits on the side and listens. I am not going to say it goes smoothly 100% of the time, but it usually works. Having one sitting in our lap helps eliminate them messing around and playing during storytime. The younger one sometimes will play quietly on the floor during my son's story if she isn't interested in his book, but it is usually not a problem. We did cut down on the number of books for each of them when we started combining, so before, we would read 5-6 books to each individually, now they each get one before and one after brushing teeth. On nights when I am on my own, the little one will turn off her brother's light then I will go tuck her in and then return to tuck my son in. If my husband is home we divide and conquer, then switch so that we each tuck both children in. I do think any change takes time for your kids to get used to, so if you just started doing it all together, give it a couple of weeks before you decide it isn't working. Remember to them it is new and exciting to do this together, so they are going to be extra playful at first. My kids enjoy sharing their bedtime routine and get very upset if one goes to sleep before the other and they don't get a chance for hugs and kisses etc. If we are pressed for time my husband and I will sometimes read the books at the same time to speed through things, but we try not to do that unless they are really late getting to bed.