Well, you have two options that you can try because the "normal" processing time is about 4 to 7 months to get the I-130 approved and then around 1 to 3 months to complete the Consular Processing. The two options are the following:
1) Write in a letter explaining the situation, providing medical evidence to support your statements, and explaining that you need him by your side and why. Here are two links to help you in this regard:
2) Another option is the Humanitarian Parole. It will require similar statements and evidences, but that might get him in the U.S. faster and then you can do Adjustment of Status while he is in the U.S. Here is a link:
Hopefully one of these options will work. I sincerely ***** ***** everything work out fine for you and your baby. My prayers are with you.
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