Ultimately, the SOLUTION to this problem is simple: HE needs JESUS, not a continual downward tailspin of a life that he is exhibiting. Only the Holy Spirit can make that kind of change...meds only smooth over the condition that lies much deeper. I, personally, believe that to label someone 'bipolar" as many doctors do today, is only saying "HE is DOUBLE-Minded...a split personality...and guess where that comes from....certainly not from a holy GOD. However, most assuredly, GOD can take that messed up personality, no matter the cause, and change it..if allowed. JESUS said "GO in peace..thy FAITH has made thee whole". We see NO faith coming from your hubby's direction. You can pray, you can witness to him, you can start attending a holy spirit filled church or local bible study and hope that he will join you...but, sadly...it is totally up to him. How did this slip through your fingers before the marriage and before the baby? Is love that blind? His only hope is found in CHRIST...perhaps the only CHRIST he sees is in YOU..but again..you have to be exceptionally spiritually mature to handle his self afflicted choices. THere is nobody who can tell you exactly what to do...but it would be totally understandable to temporarily step back from each other, where both are in a safe place, and begin to repair this . If only one of you grows and the other does not...the separation was worth the price..the answer would be obvious. IT is not a true marriage. If none of you come to a permanent decision, the separation is good because then you can see that the marriage is on shakey ground. If both of you separate and begin to seek what GOD would have BOTH Of you do..and it is followed, where both parties are in a relationship with CHRIST and both are growing, the separation would still be fantastic..because it gave you both time to realize that change was needed. In short, YES, YES, YES..separate to find the GOOD or the Evil. What have you got to lose? The limbo of not knowing what, when and how to solve this is more challenging than a temporary separation. I am speaking from family experience. Please...SEPARATE..it is NOT a sin to do that..it only shows courage that someone is stepping up to the plate to try to save this marriage.