Phentermine while breastfeeding a toddler

[Mrsmartin1991@gmail.com]

Hi my doctor is wanting to send me to a weight loss doctor for my weight most likely they're going to put me on Adipex I breastfeed my two-and-a-half-year-old but only at night. so would it be safe to take Adipex during the day if I pump and dump before I breastfeed him at night? I'm just curious because breastfeeding isn't his main source of nutrition anymore. And it seems I can't find any answer to my question this is my last hope to find some answer. Thanks.