There are some Malé vitamins that could help with motility and concentration. But there is not much to do. I would not worry much about it. I am an embryologist also and have done fertility treatment. I felt the same way. And I am afraid there is nothing you can do, I struggled the most with the 6 days of waiting after the egg retrieval because you don't have any control over the process, you just have to wait. Even if the embryologist team decides to do IVF rather than Icsi, it will be out of your control too. Do not stress much about it. They will do what they consider is best. As long as there is some sperm there is always a chance.
We've had ICSI due to MFI, I'm about to have my baby this week so happy to chat about the process we've been through if you like. Where are you located?