Trying to lose weight while breastfeeding

Has anyone who has trouble trying to lose weight while breastfeeding successfully done so? I have been trying but just plain eating healthy hasn’t been working. I talk walks everyday now but I heard intermittent fasting helps with weight loss but can I do that while breastfeeding? Has anyone tried it with breastfeeding? If so how did you do it what were your meal times and how many calories did you eat if that time frame?