Then you need to make your food more calorie dense. The only way to gain weight is to consume more than you use. There is no other way.

Been on the no chewing journey, how are you with meal replacement shakes? The bulk powders come in lots of flavours and cand be very cheap per meal. It's usually got dietary fibre, vitamins, minerals, and will healthify you far faster.

For potatoes, you need the skin included to keep nutritional value, which can be hard with no chew but doable.

You're essentially thinking newborn diet, you need calorofic nutition that's easy to eat even when you don't want to.

You got this, it'll get easier.

My meal smoothie is basically banana, white beans, spinachs, frozen fruits, lemon flavored yogurt and soy milk. I'd also add hemp hearts (expensive but super dense), nuts and a few other things. Also vanilla and almond extract for taste.

Thick blended soups are also an option. You can just drink them.