I wouldn't play with bonsai moms yet. In order to keep a plant that small you have to know when you can take a cutting to best benifit the cutting and the remaining plant. Take it from someone who has had their own mother problems, don't rush anything! Let your clone grow nice and strong just as you would a vegging plant. Once you have a nice strong helthy plant bend the top/tops right over and let the branches below start growing out. Once they are at least an inch and a half take the very top that was bent as a clone and let the new branches grow in. if you need to as the get bigger keep pulling them to the edge of the pot and spreading them out. You want a bush but you want a bush that you can take a cutting off of and give it some time to take the next cutting, then the next because the one left behind will redirect it's extra energy to the new branches. It turns into a cycle. As for transplanting and root trimming dson't do it yet. I have my moms in a 3gl pot only once they get rootbound in that would I trim the roots and as you get to know your mother better and what she is capible of then trim the root size down. Never rush a mother and next try to boost her back up because if you fuck up a mother the whole cycle of your grow is fucked and if you do it bad enough it can degrade the DNA of the plant and therefore all the clones to come and it will nevver get back to what it was. Don't over fert and don't over love just let her grow and help her take shape