Reoccurring babysitter for one toddler and one special needs preschooler - Full-time / Part-time

It is my two children and I. I am a single parent and I work and will need someone to take care of my children during the day, when they get sick, so need someone who has flexible availability, and occasional travel with us when we go on vacation, and must be willing to do overnights if ever I need help at nights with them. I have two daughters I am raising a toddler and a preschooler, the preschooler has special needs and both need to be potty trained. I am a single mom who needs occasional help from a babysitter. Light laundry, potty training, meal prep, sick days help with that if needed, overnights if necessary, learning time, play time