Is it ok to manipulate the length of the menstrual cycle before starting <a href="https://glowing.com/glow-fertility-program">IVF</a>?

I have started estrogen priming protocol and will start stimulation by first week of April (mostly between 29 march- 1st April based on my cycle’s behaviour). This will post me for ER in the week between 10-16 April. These days are not feasible for me because of work commitments. And I don’t want to lose another cycle. Hence the question.