having trouble losing weight ...

i’m having trouble losing weight. at least the pooch i have from having my son. he is almost 3 now and i still have that hanging loose skin that i can’t get rid of... i’ve been drinking tons of water, eating less calories and healthy eating, cardio 45 mins 4 days a week on the treadmill

please help??? do i start doing strength training?

what am i doing wrong

will post a photo of my belly down below!

any advice ladies????💓