I need suggestions!

Tbh... I don't do any extra exercise. I walk alot and climb but that's at the weekends. It's science... More calories out than in and you should lose weight Don't skip meals... Eat little and often so your body knows it's getting something or it'll hang on to the bad stuff!

Figure out what you're eating now, get comfortable with logging.

Reduce your calories from there -- MFP will provide you with a target based on your goals and lifestyle.

If the meals you're eating on the go now fit into that calorie goal, continue with them. If not, make adjustments to make them fit. You don't have to eat anything new to lose weight, you can lose weight eating smaller portions of what you eat now. But if you want to try new foods or recipes, some people find it's easier to stay in a deficit if they focus on what personally helps them feel fuller (many people find that fiber, protein, or fat do this for them -- you may have to experiment to find yours).

Exercise is optional for weight loss, but many people like how it makes them feel physically. I personally find time by waking up earlier each morning -- that way I can know whatever else happens in the day, I'm going to have it done.

I eat breakfast *now since starting MFP* around 7am. Then nothing until about 7pm and then a snack before bed. I hate daytime eating, but know I need the fuel to workout. But there's no rule that says you have to eat 3 meals per day or even 2 meals per day. I don't know how people eatg 3 meals plus snacks. But different schedules is OK, too. If he works nights, he probably needs to eat at night and you during the day.

I don't do meal prep at all, but lots of people here seem to find it easier/helpful. You could try that.

You don't HAVE to exercise, though that's obviously healthiest...but if your schedules are too crazy, maybe only workout together on weekends and add short walks into weekdays. Like 10 min before work, 10 min after, 10 min in evening after dinner.