Protein water.
The first week you're on clear liquids. Protein 2o and similar brands only have 15g of protein per 20oz. I used, and got for my husband, Isopure Zero Carb water mix. You can put 2 scoops in 20oz for a total of 40g of protein. I could not find it pre-made for hubby as I did for me. The tropical is okay though. It's not great but it's a week and I was determined to hit my protein goal right out of the gate. You can also make popsicles out of it.
Protein shakes and protein powder.
Those first few weeks I did not eat or drink anything besides water that did not have added protein. You can add powder to puddings, cream of wheat, soups, whatever. Just make sure if you are heating it up, only heat to tepid or luke warm. HOT makes protein powders clump.
A positive attitude.
Everything else is gravy. You can buy a million things and they may not help you. The most important thing is that you decide that whatever hardship is temporary, and you will power through. To improve the rest of your life! Hate shakes? Too bad. Hate water? Too bad. Want real food? Too bad.
You can do it. It may be hard at times but you'll be so glad you did. Work the program and it will work for you.