It sounds to me like you need to set up a regular “heart to heart” talk. This is a pre-determined and agreed upon time when you both agree to listen to your partner without judgment or expectation, and to wait your turn before talking. Listening is the key. While having a “heart to heart,” stay non-defensive, respectful and loving. Imagine and act like your partner is your very best friend. No matter what they say, instead of reacting, listen to every word. Take it all in and remain calm. Remind your partner of how much you love them.
Heart to heart talks are not an exercise in being “fake,” and pretending that things don’t bother you, but rather a chance to reconnect with one another and re-establish the bond that you once shared. One of the main advantages is that they get you used to listening to one another again. Try to have a “heart to heart” talk at least twice a week. My guess is, if you do, you'll be back on track in no time!
