The most important thing you can do is to focus on your ultimate vision and not the success of this round or IVF/IUI. So, forget being “as primed as possible” and instead spend time each day daydreaming about how wonderful it will be to have your beautiful baby. See yourself doing things with your baby or child, hanging out with your baby and the rest of your family, how happy you are etc.
You want to be spending the majority of your headspace on that vision, not on the details of any particular method or window or timeframe. Keep your mind firmly focussed on that dream future. To make it more powerful, do this as you’re falling asleep at night or as you’re waking up in the morning (when you’re still half asleep) and bring in all 5 senses during the daydream. Taste the coffee that you’re drinking, hear your baby laughing, feel your baby’s warm skin against yours, smell the smell of your child’s hair etc etc. Stop focussing on 'the day' as much as possible and just view that as the next step on the journey. Keep the focus on the long-term vision (your beautiful child here with you).
Keep saying the affirmation “my baby is coming to me at just the right time and in just the right way” over and over again. You truly can surrender to when and how it happens.
Listen to the Spirit Babies hypnosis track in the bonus section. I also highly recommend starting to read the book Spirit Babies by Walter Makichen. It can really help with feelings around surrender and trusting your baby will come at the right time.
Just a note on language - words like ‘try’ and ‘attempt’ don’t imply success. What are some better words that you could use to describe this next round or opportunity? Cycle, window, opportunity, round are all great options. Or you can say 'I’m open to pregnancy', 'I’m allowing pregnancy', or 'I’m creating pregnancy'. Pick something that resonates with you.