Welcome, brother. Lots of good advice on here.
Not that I'm an expert, far from it. But bow size doesn't have everything to do with how comfortable the bow is to shoot. Granted, it does have a lot to do with it. But how the bow was crafted has much to do with whether its comfortable or not.
Was this bow a horse bow?
I wouldn't suggest getting smaller limbs. If it were me, I would ditch the bow you have now, and keep a close eye on the classifieds on here. Lots of good deals.
Again, welcome