“Jennifer has been doing incredibly well," a source told ET.
The insider also spoke about how Jennifer is confident she made the right decision to love on.
"Her decision to move forward in life without Justin was one of the most difficult of her life but she now knows for sure, it was the right one. Since they split, her friends believe their plan to move forward in life without one another was the best decision for both of them. Neither of them is pining for each other but instead, finding themselves again," they added.
According to the source, Jennifer has also been on a healthy eating plan and eating mostly fruits and whole grains and is addicted to her egg whites for maximum protein.
But despite Jennifer making an agreement with the ex to keep communication lines open, the couple have strayed apart.
“Jennifer and Justin made a deal to stay in touch as much as possible but that hasn’t been easy," the source added. "The communication between them has taken a back seat. They were truly best friends."