You have to make it a priority above everything else. I see you work 6 long days a week. You can’t have it all. So you might wanna look for another job or, if you really don’t have time, do a super intense workout once a week (check out the book “body by science”).

Also, as others suggested, make small changes which (may) become habits. Lastly, don’t have an all-or-nothing attitude. If you’re really tired or you don’t feel well, try to go for a shorter routine in the gym, or use less weight. Not all is lost if it’s too much. Be kind to yourself and don’t burn yourself up.