Ensuring calcium intake

[LurkyLurkerMcLurkface]

Similac Ailmentum tastes like marmite (yes I tried a bit) and my 6 month old hates it. He's weaning, and I'm just using it in food. Otherwise he's breastfed. Now I know many believe that breast milk had all the necessary nutrients, but that really isn't true after 6 months. How do I ensure a formula hating CMPA little boy gets enough calcium? I'm to nervous of using fortified soy as we haven't had any formal allergy testing yet! Other than feeding him tahini paste?

Vitamin drops?

Google calcium sources and there's loads higher than cows milk, in sure broccoli is really high but you'd have to check

What formula is he on? We added crusha to neocate to make dd drink it

We avoid soya and use koko milk or the oatly non organic as the organic isn't fortified