Concerned and Guilty

For a first time mommy, I feel so guilty for leaving my baby to sleep 6 hours and was supposed to let him sleep 4 hour only from after 12am (midnight).

During the day he sleeps 3 hourly.

My baby has a slow weight gain and keeps losing and gaining weight.

It worries me. I'm scared and not looking forward to Dr visit this Thursday coming @ 9:30am as I'm scared to see what his weight will be.

I am currently breast feeding him and once in a while I give him formula to help boost his weight up.

Lastly too many people have many things and advice to give and I really don't know anymore who to take the advice from.

Tired, stressed and demotivated mommy...