Every time you leave your baby alone, even just one minute or going to the bathroom, he/she starts to cry. He/she does not fully understand yet, that you will come back.
A British study showed how babies are unaware of their existences. They placed the babies in front of a mirror to see if they recognize themselves. They did not. They touched the mirror as they would discover an other human. Than they colored the baby's nose red, like a clown, and put them back in front of the mirror. They touched the red nose in the mirror but not theirs.
I put together some points that may help your baby to deal with the situation.
1. Play “peek-a-boo” several times a day. This activity is a way for babies to “practice” their understanding of going away and coming back.
2. Tell your baby you are going away into the other room and then say a big “I’m back” when you come back.
3. Introduce your baby to other regular caregivers such as daddy, grandparents or a trusted babysitter during infancy for short periods of time, a maximum of 2 hours a day. These experiences can minimize anxiety later on.
4. Keep your “good-byes” short. Prolonging your departure can give your baby the idea there is something to fear.
5. Match your body language with your words. The baby can feel your feelings, so try to be positive.
6. Flash a smile and give a cheerful wave. Your baby can sense your confidence as you walk out the door. It should be a positive situation.
7. Avoid sneaking off. This interferes with trust and increases anxiety.
8. Instruct caregivers to redirect baby’s attention directly after you leave. Make sure that your baby’s transitional object or “blankie” is available so that the caregiver can use it to provide extra comfort for your baby while you are gone.