According to the Ancient Chinese Gender Chart, if you are conceived in one of the following time periods in rest time of 2021, you will get a baby boy:
May 12 - Jun 09 (33 lunar years old, the 4th lunar month) Sep 07 - Oct 05 (33 lunar years old, the 8th lunar month)
May 12 - Jun 09 (33 lunar years old, the 4th lunar month)
Sep 07 - Oct 05 (33 lunar years old, the 8th lunar month)