Good to take?

she
Hi all, I'm 33 TTC #1 for 6 months. Been taking a prenatal for almost a year. It has 800mcg of folic acid and I think it said 2.5mg? Of B6. I have a luteal phase on the short side...9-11 days, I get positive OPKs on day 20. I read B6 can help with short luteal phase and more folic acid can't hurt. Doc also advised to take 1000 <a href="https://glowing.com/glow-fertility-program">iui</a> vitamin D due to borderline levels in routine blood test. Do you think these are a good combo and will help?