A mild grade neuropathy can be responsible for your symptoms. But once your B12 levels get better this would improve. Because of your allergy to the B12 dietary measures can take almost 4-6 weeks to show the effect. Do not think much about it as 175 level is not bad. Some of your symptoms are very likely due to the stress and anxiety, which can compounded, if you think much about the deficiency, which does not cause any serious problem. Following may be able to help you;
2) Yoga; relaxing exercises like Yoga
3) Breathing exercises
4) Cognitive Behavioral therapy
5) Mild exercises; like brisk walking.
Please feel free for your follow up questions.