As usual, you are quite obsessive/devoted to every subject with your lengthy and evidence-based response to the point that I sometimes confuse you with the forum itself
You did not comment the maintenance phase after reaching the desired level.
So i suppose, that after reaching it and confirmed by a blood testing, you stick to the same dose and test it periodically. If it is higher that your target, you will normally stop/reduce the dosage for a while (and how long) and then take it again (and how much) through a 'trial and error' process. Digression:I am wondering what could be the effect on the vitamin d level during a rapid weight loss of a obese person which already have a high level and how the body cope with that "rush". I know that with sun exposure, you cannot overdose it but in case of massive "release", I have no idea.