Excellent. And when someone as yourself takes meditation seriously, it simply comes to the heart that you don't like meat anymore, it just gets out naturally. No problem if you eat meat, as I see you do it rarely and your mentality is different. It surely is a cleansing phase and cleansing of karma... and that takes energy to clean (your own life force or kundalini and there is much kundalini on the surface that is used to cleanse and it takes your energy) that's why you can feel weak. When you take meat, body is still adjusted to it and it helps you for a short period and it slows the cleansing, but it won't stop it, especially when you meditate. Body is used to the meat, probably less and less and it needs time to adjust to new energy also. Once that's done, it's far better than meat. Body is cleaner. And you must know when you meditate seriously, the cleansing process is faster and heavier. Meditation is the fire for karma, it turns karma to ashes, especially when you are more experienced, when you can exactly see and be aware what is happening in your body, in your system.
I eat no eggs, I do diary and I do about 10 days fasting per month and when I eat, I eat once per day. But of course, I also went through some phase, but then body adjusted itself, but you have to be persistent. No pain no gain. But if you need meat sometimes, eat some meat, and continue with your mentality and that phase will be gone sooner or later.