What whole foods should I add to my diet to build muscle when I have a low appetite?

23F, 5 foot ten inches tall, 130 lbs.

I’m trying to improve my diet so I can build muscle and also feel healthier overall. I lift weights, but I struggle with protein intake because my medications kill my appetite. I also can’t eat large meals, and I’m usually not hungry around lunch time..

The only thing I consistently get in is a Breakfast Essentials protein drink around 8am. If I don’t drink that, I skip breakfast entirely. I know this isn’t ideal for muscle growth or overall energy, but I’m not sure where to start when I can barely eat.

My questions: • What whole foods are easy to eat when appetite is low but still support muscle building? • What foods help with energy, alertness, and feeling more balanced throughout the day? • I assume O need light protein sources that don’t feel heavy on the stomach, any recommendations? • Would mass gainers be a good option for someone who can’t get enough calories because of low appetite, or are they overkill? Is it better to make my own? What ingredients to include?

Thanks!