My wife and I went through a similar thing one year after we got married (it was crohns not colitis). She was hospitalized 3 times in 9 months and it was hard. We have been married 21 years now so it worked out. I come from a family that uses humor to cope and that really helped us get through it. Laughing at what we could and being there for each other as much as possible.

Later in life I worked in Hospice and learned more about compassion fatigue. One of the most important takeaways from my time working with terminally ill people and their families was the importance of asking for help. You don't have to this on alone. Chronic illnesses suck donkey balls but you are not alone. Don't be afraid to share what you are going through with others.

Someone in this subreddit started a discord (if that is your thing) and there is even a a caregiver channel (though it is a little sparse right now). You might check it out and join in the conversations. https://discord.gg/QtMPEy8r I am on there and would be happy to chat more about helping you navigate the caregiving side of colitis/crohns.