What can I do while waiting for IVF?

Z
Hi everyone
We have been TTC for 2.5 years now. I was diagnosed with endo, has ovarian cysts removed twice and polyps removed from uterus. My right ovary has desent reserve, left doesn't really ovulate. Husbands numbers are normal. 
Before hysteroscopy and polyp removal in February I used to get ridiculously painful periods and heavy spotting in luteal phase. It's been 3 months and this cycle spotting is back. 😩
Question: we are now in the queue to get <a href="https://glowing.com/glow-fertility-program">IVF</a> done which will take around 4 months. What shall I do in the meantime to make sure that polyps don't grow again? I was thinking contraceptive pill, but doctor doesn't seem to think it will make any difference.. Not sure what to do! Have gone vegan/alcohol & caffeine free to prepare myself for successful <a href="https://glowing.com/glow-fertility-program">IVF</a>! What else can I do? :( also, anyone heard about endometrial scratch? Thanks!! x