I know it is difficult to sort information out - there are always different opinions on pretty much everything, including the subject of keeping parrotlets together in the same cage. Sometimes it works out very well. Other times, it can have tragic consequences. There is a wide range of Parrotlet personality - I learned this simply from reading the posts on this forum. Some adapt very easily to their new homes, some take a long time. Some are very willing to try new food - others are picky eaters. Some (not many) don’t show much aggression - others are very aggressive. It will just depend on the birds you have and all you can do is the best you can for them, which you clearly are doing. Monitor your little birds to see how they’re doing. You will learn their little ways of showing when they are happy or not. They will be adjusting to their new cages so give it some time. They are territorial about their cages so they will need a little time to adjust to the new ones.