partner wont have sex that much

My fertile window is this week and my husband wont have sex with me everyday, he will sometimes but most of the time he says hes just not in the mood, He wants a baby just as bad as i do, and iv tried explaining that for the best chances we need to do it everyday. Im not sure why he isnt in the mood that offen anymore he’s usually the one always in the mood. How can i get him to be in the mood more often? What can i do? I feel sad and upset that my chances arnt going to be good and i know how sad ill be when i start seeing negative pregnancy tests... I feel like its not even a romantic thing anymore its like scheduled sex.. maybe thats why he doesnt want it?