In addition, the grip in front of the fist (that is, the side grip you said) also exercises the biceps brachii, but the biceps brachii is practiced more than the palm-up posture.
The diet is ok. Pay attention to the meat in lunch, and don't be 7-8 minutes full. I don't like to accumulate fat for breakfast. You can eat meat for breakfast. There is basically no problem in controlling weight loss at dinner.