Softcups and Getting Pregnant

So lately when we BD my SO has a hard time completely getting off when we do. He says he's so close but can't get there. (I'll be honest I sometimes feel it's me.) He's self employed and very stressed/exhausted. Usually I just end up getting him off manually. We've been trying to get pregnant for like 6 months. Has anyone had success using the Softcups with having him deposit sperm in it? Any suggestions? I'm seeing my OBGYN in less then a month to see if there's anything else I can do.