Accoding to the Chinese Gender Chart, in 2020 you will get a baby boy if you are conceived in the following periods: Jan 1 - Jan 24 (31 lunar years old, 12th lunar month) Jan 25 - Feb 22 (32 lunar years old, 1st lunar month) Mar 24 - Apr 22 (32 lunar years old, 3rd lunar month)
So, if you try to conceive in July and August, you have more chance to get a girl.
In 2021 you will get a baby boy if you are conceived in the following periods: Jan 13 - Feb 11 (32 lunar years old, 12th lunar month) Mar 13 - Apr 11 (33 lunar years old, 2nd lunar month) May 12 - Jun 09 (33 lunar years old, 4th lunar month) Sep 7 - Oct 05 (33 lunar years old, 8th lunar month)
Jan 1 - Jan 24 (31 lunar years old, 12th lunar month)
Jan 25 - Feb 22 (32 lunar years old, 1st lunar month)
Mar 24 - Apr 22 (32 lunar years old, 3rd lunar month)
So, if you try to conceive in July and August, you have more chance to get a girl.
In 2021 you will get a baby boy if you are conceived in the following periods:
Jan 13 - Feb 11 (32 lunar years old, 12th lunar month)
Mar 13 - Apr 11 (33 lunar years old, 2nd lunar month)
May 12 - Jun 09 (33 lunar years old, 4th lunar month)
Sep 7 - Oct 05 (33 lunar years old, 8th lunar month)