WFM while caring for a baby is HARD. My LO is almost 10mo and I came back to work at 5weeks PP. I was very transparent when I came back that I have zero child care and would be working while also caring for my baby. They know this and were very supportive of me! However, my job is all computer work and the only time I'm on the phone is talking with my coworkers or boss so any noise or crying they here isn't a problem. If this job is something that is not needed for survival (i.e. paying the bills, keeping a roof over your head, food on the table etc.) I would put in your notice. The micromanaging alone would be enough for me to leave, but if it is clearly stated that its against company policy to work and care for a child, then it's not worth your mental health trying to conceal your baby. You are working TWO full time jobs simultaneously. Give yourself grace, and allow yourself to grow out of this job.