Not directly linked to sex, but just general comfort. You can get vaginal moisturiser, which I think can help with scar tissue. Can be used daily. The YES YES brand do one-I think you can get it on amazon. Might be worth considering an appointment with a womens specialist physio, too. They can help you work on discomfort during sex postpartum.
Lots of foreplay and lots of lube. Open communication with you partner, with clear boundaries. The more ‘relaxed’ you are the better Also, when inserting a tampon it’s not a pleasure act and you will be dry, caused even more by hormones. This is not a true reflection on being intimate with your partner x