Going through divorce with a spouse who's ghosting me

I filed for divorce in December. My husband's communication style (rarely calling or emailing, rarely responding to messages) while at his parents' home, being their caregiver, was a big, although not the only, factor leading me to decide to file for divorce. His withdrawal, emotionally, physically, and financially, from the marriage is the prime cause. Since the filing, the communication has become even less existent; he responded to one message, about a malfunctioning appliance, and that is it. I would appreciate suggestions for keeping my head in the right place for the remainder of the divorce process. I don't want to force communication on or from an unwilling person but I don't want to lose myself to depression, either. Thanks.