High fsh levels - awaiting natural IVF cycle

Kel • TTC #1. 40yrs.Newlywed. Trying to embark on natural cycle IVF + TTC naturally.
Hi, I'm about to embark on natural cycle <a href="https://glowing.com/glow-fertility-program">IVF</a> at age 40 but only if my fsh levels go down to below 15, will the Lister clinic in London admit me It's frustrating as in July they were 7.7, Aug jumped to 24. So with a lot of research I attempted to get them down via acupuncture, DHA, warm foods, no caffeine. So sep fsh was 20. Praying with for Oct it will go down to 15. 
​Has anyone had natural cycle <a href="https://glowing.com/glow-fertility-program">IVF</a> or probs with high fsh? I'm aware natural cycle at my age 40 is a very low chance :-(. Trying to remain positive.