Certified GKH Gardening Expert
I have been seeing quite a bit of early pineapple pup propagation for some time now. This is very interesting.
It is best to wait until they establish pretty well. They can even grow together completely their entire life with no harm, as long as they have a large enough container. Each plant will need at least 8 gallons of soil to be happy and produce a full size fruit. They will survive in smaller containers, but the fruit will also be very small.
This article will help you to divide them if you would like: https://www.gardeningknowhow.com/edible/fruits/pineapples/pineapple-plant-fruiting.htm