TTC tips and ideas?

My husband and I are on our 3rd timed month of trying and AF showed up today(few days early), so on to month 4 of TTC. I have done tons of internet reading and taking prenatal vitamins and thinking of changing up my diet as well. I've read so much on keto, paleo and other diet changes to boost fertility. There are so many suggestions that I was hoping to hear feedback on what's working or most effective towards a healthy BFP! I'm bummed I'm out this month but keeping positive. Wishing you all the same😊