The regimen I use with my husband is this. He too must have 7 cans per day. 1 can using gravity and syringe @ 8am. Then 1 can @ 12. Then 1 can @ 4. At 6pm I put 4 cans in the bag and use the infusion pump all night at 90 cc per hour. My husband tolerates that well. The pump throughout the night is the trick. Before that was a struggle to keep it down.