I liked the note you got from bigbird 123. Steve said that there is more than one way and he is correct. I had two addittional thoughts. One would be to only frag the largest, which are inhibiting the others from growing. The second thought is how do you provide a protected area for your frags. The shrooms are pretty slippery and hard to glue. Depending on currents in the tank, I use a container with raised sides to protect from current and sand to cover bottom for the cuttings to attach too. After about two weeks, the cuts have healed and the cuttings hopefully have attached to sand grains. At this time, the cuttings can be glued and moved to a more permanat place.
Good cutting,
Pat Castille