Advice?😅😅😅

So my boyfriend and I seem to be going through a rough patch, mostly stemming from his depression getting worse and him refusing to seek any outside help. When we are together things are great, but with how our schedules work we don't see each other every day and that's where things get kinda messy, I guess I'm trying to ask how I can show him that I'm here for him and I both care for and love him without being too overbearing and coming off as clingy? How do I help someone who's refusing to admit there is even a problem? 😅 any and all advice will help, thank you in advance!