Difficult to answer without photos but...
In general, after any surgical procedures, the swelling and bruising will distort tissues for few weeks; so give it a bit more time before considering a revision. Saying that, a canthopexy is usually indicated for scleral show due to lower eyelid laxity. In your case, the scleral show is due to exophthalmos (protrusion of the globe) and maybe an orbital decompression would be the way to go.
Hope it helps!
No photo so please recognize that these are general comments.
Canthopexy and canthoplasty lack the ability to correct inferior scleral show particularly in the setting of a prominent eye or relative eye prominence which is seen when there is poor inferior orbital rim projection. These procedures are best to help a lax eyelid. Due to the geometry of the eye, tightening the lower eyelid with these procedures can actually pull the lower eyelid below the curvature of the eye and make the inferior scleral show worse. Definitive treatment involves adding projection to the orbital rim in the form of an implant. I prefer hand carving an ePFTE implant for this purpose and vertically lifting the cheek up onto the rim implant. This has the effect of recruiting more soft tissue into the lower eyelid space. The effect is to take the weight of the cheek off of the lower eyelid.
Regarding your recent surgery, it is hard to comment definitively without the benefit of see your photos or examining you. It is likely that things will improve as you are only 2 weeks out. However, I think it is improbable that the lower eyelid will come further up. If you do need revision, you will need an approach that is much more comprehensive than simply repeating the fail canthal surgery.