@deamy It's all personal really. After my first, I had sex right at 6 weeks, but not frequently. Maybe once a week, or every other week?
My second, my ex husband and I were all but broken up, so it was very infrequent already. Maybe a couple months? I masterbated way more than I had sex.
I just had my third 3.5 weeks ago and I'm counting down the days until 6 weeks lol my partner and I both have incredibly high sex drives, so we were having sex 3-4 times a week, with the last time being literally the night before I went into labour.
Start slow, use lots of lube