Even though toxicity is unlikely if you keep your daily intake levels below 10,000 IU per day and avoid excessively high intakes of vitamin D supplements, experts recommend that people with typical vitamin D levels do not exceed 4,000 IU of vitamin D per day
If you don't get much sun exposure, 3000IU D3 is pretty reasonable.
I take 3000 IU since I don't get too much sun and I am fine.
You're right.
https://www.healthline.com/nutrition/vitamin-d-side-effects#1.-Elevated-blood-levels