Go for walks, make a cuppa, make regular visits, be funny, be supportive, be accountable, make open and honest conversations, try deep breathing, do some exercise, clean the house, cook together, help with appointments, childcare, support a healthy lifestyle, do the shopping and seek help.
This isn’t an exhaustive list, of course. These are just a few practical ways in which you can make your friends/peer/family feel loved, attended to, maybe temporarily relieved of stress and depression