Good advice. Marriage at a young age is quite an adjustment, then a child comes into the picture and as a couple you have even less time for just the two of you.
I echo the advice from others to try to get any focus off of the WTS. Try to find common ground with things you do have an interest in. Maybe sightseeing, picnics, long walks.
Any marriage is difficult. Patience is called for. I was married at eighteen. I have been married for close to forty years. It ain't easy.....but hang in....it's worth it.