[keltic dave]

Its not hard at all to switch to being a vegetarian since you said you're quite muscle then you just make sure you beef up the meals with beans, lentils, chickpeas all are very high in protein and since you still drink milk then you don't need to worry about B12 as you get that from milk and dairy products.

I was quite a big meat eater and I've successfully changed completely to being a lacto-ova vegetarian I wont go the whole hog and become vegan though.