Sophie12,
I suggest you stay at the safe house indefinitely for your protection, your mother's protection, your pets' protection.
Your husband is in active addiction now and for him active addiction = violence. You may be willing to risk your own life in order to give him that 90 day chance. But are you willing to put at risk the health and welfare of the others you love?
Your husband is 98% likely to continue drinking and physically and emotionally abusing you and anyone else in his reach.
Please stay out of the house and keep all the others safe as well.
The number for advice about domestic violence is 1-800-799-SAFE.