Help my dragon Stumpy battle cancer

My bearded dragon stump has recently been diagnosed with an enlarged heart and possible liver issues. The veterinarian has reason to believe he may have cancer.I’ve had him since he was 3 months old he is now almost 4 years old and he’s my basically my son and I’m trying my best for him. his bills are more than I anticipated to get him the help he may need. Any and all help would be greatly appreciated.