That first-time mum worry of finding someone you can truly trust with your LO is so real, and you are definitely not alone in this. I would suggest posting in the PCF or NTUC First Campus parent groups as some of their caregivers do take on private arrangements, and word-of-mouth from neighbours in Serangoon is usually the most reliable way to find someone good lah. You can also try the AYE or CaregiverAsia platforms where you can read reviews and do a background check before committing.