Protein: too much??

I've been using the Stallone puddings for a couple of my meals a day. As with any food and me, now I'm up to 5-8 cans a day. Still doing my water, vitamins and calcium but could I be screwing up my blood work etc.? I am 22 days from surgery and will be traveling to help with family emergency from 5/10-17. Haven't had pre op blood work yet? I had planned to rely on the puddings to "Keep things simple" during my away time. Any body out there know? Sue K