I'm pretty sure Tom (EtherialEntity) mentioned previously that he only has one solid meal a day, and he's a powerlifter like me. The thing is, he makes very calorie and nutrient-dense shakes 3-4 times a day. Try adding some more stuff to your shakes to account for the lack of solid foods, such as peanut butter, oats, hazelnut spread, honey, and olive oil. Try to make every shake between 400 and 1000 calories, with high protein and moderate carbs. If you manage that, there's no reason a liquid diet wouldn't work.