Is there way to fix eroding composite veneers?

Composite resin will chip and discolor and has the shortest lifespan of dental materials. Since you do not have the finances to replace these now or do minimal prep veneers, you may try to find a dentist who may paint on and cure a layer of composite resin veneer cement onto the surface to see if that may give a lighter color to your composite veneers.  This could be a way to make you happier with the appearance, but it will wear off. You may want to start setting aside funds for thin, minimal prep veneers so you can do them in the future.

I am sorry that you are having to deal with damaged resin veneers. Resin is not as strong as porcelain veneers and will chip and crack over time.
If you had a large amount of enamel removed to make way for the resin veneers, than you will most probably have to deal with sensitive or unsightly teeth. Most often patients will not require as much enamel removal for resin veneers. Unfortunately, only a dental professional will be able to give you the best advice on resin veneer removal. Good luck!

Thank you for posting your question.  The old composite can be removed from you tooth.  However, depending on how the tooth was prepared or amount of tooth reduction done prior to placing the composite, it will affect what you will find underneath the old composite.  If there was a lot tooth reduction then just removing the old composite will leave your teeth exposed and possibly sensitive.  If there was minimal preparation then it may be possible to remove the old composite without replacing it. A dentist would have to see it clinically and take x-rays to know what your situation is.  Hope this helps.  Good Luck!