Struggling to Stay Up for Isha Prayer

Assalamu alaikum, I’m in Europe, and the prayer times are really late nowadays. Maghrib is around 21:50, Isha at 00:01, and Fajr at 03:40. I’ve always been an early bird, sleeping and waking up early. Lately, I’ve been working hard on my deen and finally praying all five on time, alhamdulillah. That’s something I’m truly thankful for. But I’m facing a tough test now. My mother is very sick and hospitalized, and she lives two hours away by public transport. I’ve been spending long days away from home and coming back super late, drained. The travel gives me headaches too, which just adds to it. I’m not making excuses, but sometimes I collapse from exhaustion without meaning to. Once I fell asleep at 20:30 and didn’t wake till 3:00 am, so I had to make up Maghrib, Isha, and then pray Fajr. Today was rough again-woke at 4:00 am, got home at 22:00 after over six hours on buses and trains with delays. I left all the lights on to try and stay awake, but still dozed off before Isha and didn’t wake until after sunrise. I feel so guilty. When I woke up, I opened TikTok to shake off the dizziness, and the first video was a Quran recitation about neglecting prayer. It hit me hard. I don’t want Allah to see me like that, but this is really overwhelming. Any tips on staying awake for Isha? Thinking about coffee between Maghrib and Isha, but scared it’ll ruin my sleep. Alarms don’t work when I’m this tired. It’s starting to feel impossible. May Allah ease all our struggles and keep us firm in worship. Ameen.