Babysitter Needed for my Children - Now Hiring

I have a 9-month-old daughter that still wakes up in the middle of the night and will need a bottle and is on special formula. I have a3-year-old son that is autistic. All Im needing is once a month somebody to come in and sit with them from 6 p.m. 10 p.m. and I can tell you when I need you four hours just to watch the monitor if the9-month-old wakes up, feed her a bottle change her diaper put her back to bed. If the3-year-old wakes up just sending him back to bed. We will put them to bed ourselves. We just need somebody to come in and watch the monitor. We have a 16-year-old daughter that doesnt wanna watch her siblings so thats the only reason were having to do this.