5 more pounds till I'm back down to my prepregnancy weight, 4 months post partum

I was 123 before I got pregnant and the day I went in to have my son I was 205 so I gained 82 pounds ( I was preeclamptic so a lot of the weight was water retention) I eat 8 healthy small meals a day and I do an hour of cardio workout. but right after I had my son I lost 60 pounds just by breast feeding @livd15

how much did u gain can I ask ? and how did u get it off