My 7 year old lab diagnosed with large tumor on C3 vetebrae

Our 7 year old lab has been having a slow decline for the past three months culminating in an xray showing a large tumor on his C3 (cervical spine) with the beginnings of breakdown of the bone in the vertebrae.  We have been administering MMS1 at about a drop or so every hour for anywhere from 4 - 8 doses a day.  When we got the final diagnosis Thursday we ramped up his protocol to 2 drops MMS1 for 8 hours a day including 6 drops of DMSO with each dosage.  We also have tried protocol 3000 with the MMS1 and DMSO parting the hair on his neck over the tumor.  So far have not seen any improvements.  Seems like his function in his front legs have gotten worse.  Curious if there is anything else we should be doing and if there is a time line before we call it quits.  This is no life for our fast and furious active lab. Completely incapacitated.  Thank you for your help  Susan