Home confinement has been one of the preferred release options for non-violent inmates during COVID-related early release programs, and it is possible that your husband's halfway house placement could shift to home confinement depending on the specific program authorizing his release and the BOP's current protocols.
During the height of the pandemic the CARES Act gave the Bureau of Prisons expanded authority to place inmates on home confinement, and that authority was used more broadly for medically vulnerable and non-violent inmates than the standard halfway house pipeline typically allows. Whether that option remains available depends on the current policy environment and the specific circumstances of your husband's release authorization.
The most direct way to find out is to have your husband ask his case manager specifically whether home confinement is available as an alternative to the halfway house placement, given the COVID context. That question puts the option on the table formally and allows the case manager to assess eligibility.
If home confinement is granted, the conditions attached to it are serious and non-negotiable. Electronic monitoring, strict curfews, approved location requirements, and regular check-ins are standard. The stories coming out of early COVID releases include people violating conditions within hours of getting home, which results in immediate return to custody and in some cases, placement in the SHU.
Whatever form the release takes, your role on the outside is to help him understand that every condition matters and that no rule is worth bending this close to real freedom.