It is always best to get our vitamins from food, so you are doing the right thing. Sesame seeds are also good. I eat a lot of arugula to get my vitamin K2 (plus I put kale and ground almonds and pecans in my veggie burgers). The high dose of D3 you are taking is also given to people with MS. I hope this high dose works for you.

An interesting thing about vitamin D3. If you feel like you are getting the flu or a cold, increase your D3 to 10,000 IU per day (I do it in two doses) for 10-14 days. Last time I did this when I was getting a horrible cold with swollen glands the size of golf balls in my neck. After I took the first dose, I started getting my bedroom set up figuring I'd be sick a few days. By the time I had everything set up, I noticed my glands were going down and I was feeling. better! I continued to take the high dose for 10 days and I continued to feel well! As the dose would wear off, I'd feel a little sick. I think I sneezed twice and had no other symptoms! Vitamin D3 is actually a hormone - not a vitamin - and it is very powerful. It works with over 250 systems in the human body. It also helps to reduce falls (by 50%) in the elderly. You can learn more by going to the online Vitamin D Council. There has been a ton of research done.