For supplements..
This week (week one), dust at every feeding except one with a phos free calcium powder lightly. For that one feeding use a calcium powder with D3.
Next week (week two) dust with a phos free calcium powder at all the feedings except one again. On that one feeding dust with a vitamin powder that has prEformed vitamin A in it but doesn't have D3 in it.
The third week repeat what you did in week one.
The fourth week do what you did in week two.
This week (week one), dust at every feeding except one with a phos free calcium powder lightly. For that one feeding use a calcium powder with D3.
Next week (week two) dust with a phos free calcium powder at all the feedings except one again. On that one feeding dust with a vitamin powder that has prEformed vitamin A in it but doesn't have D3 in it.
The third week repeat what you did in week one.
The fourth week do what you did in week two.