Mummywong,
Suggest you bring baby to doctor to confirm if it's cradle cap. It could be eczema too since HK weather pretty dry.
Enmummy,
No guide that say you must upgrade to pants type diaper. It depend whether your baby still allows you to wear the velcro type. I'd only use pants type for my no.1 when he is about 2 plus and is too big for most changing station outside and faster to change if need to change in normal toilet.
Ching,
Like what is said, you'll need to reduce the no. of pump gradually for your body to get used to it and stop. Baby also need to be introduce to FM. This is ascertain that the FM is suitable. Give it at least a few days to try to ensure baby do not get constipated or diarrhea etc. Initially start by substitute 1 feed with FM and gradually increase till all feed is FM.
As for apple, I would cut 1 whole apple into small pieces and then steam them. After that, I'll use a blander to bland into purée (very very fine). I'll divide into feed portion (freeze the rest for later use, I use petite baby cube). When I want to feed, I'll warm to body temperature and either feed 'neat' or add a bit of water and baby cereal.
Try 1 food at a time for 3 days before introducing something new. In your case you might want to hold back apple if you are introducing FM.