Ok. Those are terrible. I would advise you to wean off those (don't just drop them, wean off gradually) and replace with something that does not have the following ingredients, which cause more harm than good:
DO NOT TAKE:
Ginseng
Maca
Carnitine
Arginine
More than 100% of Vitamin E (both of these have more than 100%)
Massive doses of B vitamins (some of the B vitamins are 10X what you need and the B12 is crazy high in those)
These things are either unsafe or may be negatively impacting your ability to conceive. I am happy to explain the whys on these if you want me to but they're all things I've either seen concerning information about, or actually seen them mess up people's bodies and interfere with their chances of conception.
I WOULD PREFER YOU DIDN'T TAKE:
Lycopene
Citrus Bioflavonoids
Pine Bark
Octacosanol
Glutathione
We just don't have enough information on these to know if they could be affecting your ability to conceive negatively. As a general rule I recommend you guys just stick to about 100% of all the recommended Vitamins and minerals, a little higher on Vit. D and folic
acid/folate, and then avoid all the extraneous things because you do not need them.
Inositol may also impact a blue sway negatively but that's not a super high doses, you can continue with that.
Re the letrozole, there's no need to stop, just wean back to the 2.5. It's your call to make, but generally speaking once you've started the medication, you're already incurring some of the risk and you may as well complete the dose (at a lower dose) and then you can still see some of the benefits.
Your husband needs a sperm analysis. Many times when we have a couple just not conceiving for no logical reason, when the husband has had a sperm analysis his sperm health is off and that was what was causing the issue. Most of these issues we can fix with supplements and a few minor changes in lifestyle, so it's good to have one done if at all possible.
When is your period coming in relation to when you think your ovulation is happening??
Preseed should be ok on paper, but some people have reported that they feel it is impacting their rates of conception negatively. If you have a good amount of natural CM then you may want to just skip the Preseed and use that.
Are you using guaifenesin to improve cervical mucus?