Pamapaul

I already moved your thread to the Progress Reports sub-forum.
 

not doing a CR1 unless u are already married is not a reason to deny
Agree that CR1 is stronger evidence of a relationship but a K1  is not just denied like that or USCIS would not have that visa in the system
 
red flag are 
big age difference
not enough quality time together 
income is not enough to sponsor the immigrant
person could become a public charge as u can not afford health care
and the issues Nolo law points out
https://www.nolo.com/legal-encyclopedia/red-flags-that-make-uscis-suspect-marriage-fraud.html

Already answered you on the FB group and I hope more experienced members here will know for sure, but to me it’s a crazy idea to have a child just to have a higher chance to be approved at the K1 interview. Even if you do plan to have children in the future, don't rush it thinking it will help. This is a lifetime responsibility and there are many other implications around a pregnant fiancé, especially because she will depend on your income and your health insurance.
 
If the only red flag you have is the first K1 petition you left to expire (because of the lawyer/covid as you said), then always be truthful about it if they ask you about that. And as you told me, you have evidence you tried to save the first petition so present that too. Wishing you get your NOA2 soon!

That makes no sense. Run from that lawyer. A child makes no difference to immigration especially out of wedlock.  Just make sure your evidence of a relationship is there. You will be fine. 

*** Moved from K1 Process & Procedures to K1 Progress Reports ***
 
 
My advice is to fire that lawyer and to hire a more competent and trustworthy one.