My first IVF was successful. I actually agree with PPs who have said there's almost nothing you can do to affect it (y'know, as long as you stay off the hard drugs etc
).
That said, I engaged in all kinds of crap that made me feel better, and I agree with @wateruniform - as long as you feel happy with your choices, that's the most important thing. So get tips by all means but only do whatever feels right and don't worry about anything else.
My doctor said stress isn't a factor unless it becomes distress, and that helped me to feel calmer. So relax if you can, but if you can't, don't stress about it!
In the 2ww I meditated and visualized the embryo implanting, ate pineapple core, kept my feet warm, had lots of tv shows that made me laugh lined up (I heard laughter helps!). In fact I meditated throughout because I found it relaxing (there are meditation videos for different stages of IVF on YouTube if it's your thing. If it isn't your thing, don't do it). Some people swear by acupuncture but that wasn't for me. I tried to imagine myself being pregnant and told myself it would work for me (difficult to believe after a long time of infertility but I was determined to be positive).
Before egg collection, I took ubiquinol, vit d, folate, fish oil capsules and ate very well, lots of salad and nuts etc. I heard it was important to keep warm after transfer so I ate soups and stirfried veg rather than salad at that stage. I walked for exercise, nothing too strenuous.
About a week into my 2ww I decided that if the embryo was good and the environment not terrible, that I wouldn't be able to stop it working and I relaxed, but I enjoyed all the measures I had taken (rather than stressed about them). Even if they did nothing else, they made me feel I was doing something and trying my very best.
Also agree with @Xdecd don't test early. There is almost never anything to be gained by it. I read lots of 5dp5dt BFP stories so when I tried it early I was devastated to get a BFN. I got my first super faint BFP in the evening of 8dp5dt so all that upset was for nothing. Even if you get an early BFP, you worry about how early it is and that you could have a chem, so you wish the time away to official test date anyway. Pregnant until proven otherwise so wait to test if you can (and not everyone can - I couldn't!)
Finally, be prepared for nothing to go to schedule! Someone told me the same but the process had gone so well for me at every stage that I thought it would go to plan. I got OHSS unexpectedly on the day of egg collection which meant no fresh transfer and a 2 month delay until FET.
I wish you the best of luck. Infertility is awful and cruel, and IVF is tough physically and emotionally, but as a @81Poppy said, amazing when it all comes together 🤞