For dry and scaly skin on the neck at that age, it could well be eczema, so seeing a paediatric dermatologist rather than a general GP would give you a more targeted treatment plan. My friend brought her baby to Dr Ker Khor Jia and said the consultation was thorough, she actually addressed whether the condition might resolve over time and what to do in the meantime, which my friend found really reassuring. Dr Shanna Ng is another name that comes up quite a bit for infant skin issues, so either could be worth looking into depending on which clinic is more convenient for you. Both seem well-regarded for this age group, though waiting times at specialist clinics can stretch a bit, so it is worth calling ahead to check availability.