As I said, since your K levels are pretty high, supplementing with 10 000 IU of D3
per day (or 70 000 IU, once per week) would be great for
about 2 months to bring your levels to much higher ones.
Natural D3 is always better of course, but you don't have to burn yourself in the sun.
In general, all you need is about 10 to 15 mins in the summer sun between 10am and 3pm to get 10 000 IU of D3 daily.