One of the things that I love about Cambridge is that you don't have to wait until you've lost a lot of weight before you begin feeling better. Even with the small meal you are adding, it won't be long before you start to feel lighter and have more energy. Our food choices definitely can effect our energy, pain levels, inflammation, and emotions. I'm sorry you are feeling so badly right now. I've been there. But the direction you are moving in now will reward you. This I know for sure!
p.s. I miss baking! I've been a baker my entire life. I just told Andy yesterday how hard it is to not go in the kitchen and create something beautiful and amazing. He looked at me like he might cry! lol! I told him he should have met me 20 years ago. He would have been in heaven