How To Make Plenny Shake More Filling?

Hello! I am attempting to go 100% Plenny Shake to meet all of my nutritional needs. I am a 5”7 128lb female. I make the standard 96g serving and have 5 a day. (Made with 12 oz water). When I drink it, I am satiated, but only for an hour. I soon feel hungry within 2 hours of having the shake. How do I make these shakes more filling? I have tried adding more water, and it just makes the shakes thin and taste weird. I’m also an active person and get 12,000 steps throughout the day. (Not sure if that has anything to do with it, but I wanted to add details just in case.)

Thank you!

-Deerheart