Need advice about getting pregnant! Mistakes? What can make it better?

My husband and I have been trying to conceive for three - four months.

The first month, my husband and I did the saliva technique and just used our saliva or used nothing when it came to intercourse. I researched that saliva kills sperm. So I think that was the first mistake.

Second & third time, my husband and I used the water based KY lube and I think that might have slowed down his sperm from what I read.

Now that my period has started this month, I continued to take my prenantal vitamins (I've been taking them since April). I also ordered preseed lube and premama fertility drink mix. Do you think this is a good direction to take? We are hoping to conceive as soon as possible but I also understand it takes time.