I do have a complete woodshop however due to relocating and not enough electric in the garage everthing is pack up still.
Is the front of the canopy part of the supporting 'box' or frame that holds the canopy together ? If so you probably have to remove the whole front piece and replace it with a board going from side corner to side corner to hold the thing together. The front can then be attached to the top of the canopy with a 'piano hinge' which is just a long hinge to support the weight of the front piece. With that in place you would lift up the front panel and top together then the front piece would fold into the top piece.