The creator of soylent has basically said you shouldn't ONLY consume soylent. You do need to eat real food sometimes. I like deli turkey on a high fiber wrap, salad kits w precooked chicken, and Costco has some excellent frozen breaded chicken that is microwavable. Trader Joe's also has a lot of good affordable pre-made meals.

I did this for about 9 months when Soylent was first coming out. It's fine. It actually makes calorie counting really easy. You do get super super liquid poops for a couple weeks.

Google says there are also meal replacement bars! You could look into those too 🙂

Liquid only is bad for your gut and your butt

Eat fiber (grains, beans, fruits, veggies) and drink meal replacement shakes and you’ll be fine.