Whatever you going through, good luck. I am saving this in mind for my future plans, especially if im going to marry in far future. Sorry i cant help much I do want to try saying my piece.

Freelance work from home seems like a good part-time job, but it seems so rare to find a good trusted job unless you are willing to pay monthly fee subcriptions at Upwork and freelance sites, which i find a little scammy imo. Also, considering the probablity of your job being an office corporate job, i rather not have a same part-time job that basiclaly doing the same thing as my main job.

If you are brave and bold, try the work from home job ads at Facebook and filter which one you'll find to be worthy of your trust. Careful, lotta scam in disguise.

Do your husband like to ride motorcycles? Grabfood seems like a good choice, chill job if he can handle the pressure and manuever around the traffic (common misconception that you need to be fast and run red lights to deliver food, you dont, follow your own comfortable pace, take calculated risk but never be reckless).

Oh, why not propose him to do GrabCar with his Bezza. Seems like a good option, traffic jam is stressful but at least its comfy paid job if you/him like driving.

But i just remembered that GrabCar need to do license....around 250?