Can I ask why you want to do this? The 2 x 9 setup you have has a pretty remarkable range of gearing with an incredibly low gear for climbing (22×36, somewhere around 16 or 17 gear inches). I don’t think converting to a 1 x system would give you a wider range, so the question is if you are having trouble with the front deraullier, want the simplicity of a single system, or are wanting to change because 1x systems seem to be preponderant now. Also, the bike has excellent ratings but the cost of conversion might be a significant percentage of the cost of the bike.