Husband not taking steps to improve sperm quality.

Long story short, my husband and I have had multiple miscarriages. We move onto <a href="https://glowing.com/glow-fertility-program">fertility treatment</a> and have had failed <a href="https://glowing.com/glow-fertility-program">IVF</a>. All throughout this we both continued to drink, not excessively but a few times a week. (Obviously not while I was pregnant). I’ve asked us both to cut back as it may be hindering our chances. I’ve cut back significantly - he never kept his word and hasn’t changed a bit. He smokes the e cig all throughout the day which has nicotene in it which can effect sperm. He drinks energy drinks frequently. He also works night shift and has poor sleep due to this. Now the sleep I know he doesn’t have much control over but everything else he does! And I know he truly wants a baby it’s just like he’s not willing to change any of his habits to possibly increase our chances. We constantly argue about it because of his unwillingness to change. Am I being too much to ask that he puts in more effort? Any ideas?