Many leniencies were instituted in the case of an ill husband.
You may serve him food and drink and hand things to him directly. You may help him stand, sit, lie down, walk, and even dress or lay tefillin, but only without direct physical contact, if possible. All the harchakot are relaxed, with the exception of affectionate touch, preparing his bed in his presence, or washing him, unless there is no alternative.
In general, you should make every effort to minimize direct physical contact. Where that is not feasible, or could cause him undue pain, you may help him, but should wear gloves (but not gloves as thin as surgical gloves, again, if possible).
You may wish to contact your husband's physician or an occupational therapist for ideas, techniques, or products that can facilitate your husband's being more independent. We hope this helps and that your husband's health improves.