My MCV Level Was 99 In April And Just Came

My MCV level was 99 in April and just came back at 102. I am a Vegan and have been tested for B12 deficiency and it is normal. I usually have a glass of wine with dinner at night but with the level elevated in November I've stopped that and now only have a glass or two on the weekend. I have had hypothyroidism for several years and my TSH numbers went up in November also. Can you give me any further insight? Also, can the MCV level be lowered?