It’s not budging! What am I doing wrong?

So I’ve been exclusively breastfeeding and pumping since my baby was born. She’s 3 months old. I’ve lost majority of the baby weight but I could afford more to lose as I am slightly overweight due to the BMI chart.

For the past 4 weeks, the scale has not been budging. I’m not gaining, I’m not losing.

Is this normal? Is there anything you mamas can recommend I do to get rid of this plateau? For moms who breastfed to a year, is this something that happened to you as well?

Don’t know what I’m doing wrong, my diet is normal with healthy Whole Foods and no extra calories taken in.

I’m currently pumping 60oz a day!