Need help with hubby

Alright ladies, we all know that TTC can be stressful for the men in our lives too! They have all the same worries and seems like half the support or answers(no matter how hard we try to explain CM, bbt and all that stuff). My issue is that I have a DH who is generally concerned as I am about our TTC journey but has two areas I wish he would focus on and is t. He is overweight(only carries his weight in his funny) and is a heavy smoker. Two issues that we all know do not help. We have been eating healthy (very healthy) for about 6mibtha now and I really want him to start exercising and work on the smoking. Any tips for motivation or how to get him on board. He complains about his weight and wanting to quit all the time but doesn't commit. We are going to be seeing a specialist in two months and want him to be started in the process of weight loss and quitting smoking by our first appointment, but I don't want to add too much stress to him. Please help!