Sigler, 36, continued, "I’m having to stop breastfeeding soon so I can get back on meds. The truth is, the toll of two kids and a newborn lifestyle is not the easiest on me and I need some help."
The actress went on to explain why it was so hard to stop breastfeeding her newborn son. Sigler is also a mother to a 4-year-old son named Beau.
"What sucks is that I live with a disease that makes decisions for me a lot, and with breastfeeding I took SUCH pride that I was able to do something really awesome with this body that I am constantly at war with," she wrote. "This little guy's tummy is struggling with the formula, and I KNOW we will both be fine, but I’m emotionally having to deal with the guilt and sadness that is coming along with weaning us both off this magical time."
Sigler then asked her more than 100,000 followers on Instagram if they had "any advice ... on how this can be any easier?"
"I can't walk for a long period of time without resting. I cannot run. No superhero roles for me. Stairs? I can do them but they're not the easiest," Sigler said then.
"Sometimes all I needed was like five or 10 minutes to sit and recharge but I wouldn't ask, because I didn't want them to be suspicious," she said of being on set. "Things are manageable now."