TTC #2

So my fiance and I have been trying for baby #2. November will be 2 years since losing our twins. For this ovulation we are doing a mix of A.I. and N.I. My highest days are 2nd, 3rd and 4th. 2nd we did A.I. only. 3rd we are doing A.I. then later on I am going to do N.I. with my bf with the assistance of Preseed and 4th were going to do A.I. Any tips, tricks or advice for us for the next 3 attempts?? TYIA!!