Managing health is expensive. All my life, I've done this. Only people who do this would understand, just like the situation with your son and how you've been trying to get to afford his medication. Routine drug is a hassle, it's even funnier when you know that one might have to continue buying them for a very long time.
I have bought a lot of numerous medications prescribed by various doctors and mostly all that money have gone to waste.
Only God understand, and only him knows everything. I guess there are questions you'll without getting answers. It's life and it's how it is, evening if sometimes it becomes too hard to endure.
All the best to your son too, and happy new month to you too.