

Most current Gen. thinkpads have fully upgradable ram. The T4XX/14 series had half soldered ram until a year or two ago. SSDs have basically always been replaceable.
They’re also very easy to work on since it’s only a couple of screws and you have full access to the inside of the machine. Those older thinkpads were nightmares if you had to take the whole mobo out. Even MacBooks were easier.










Find an app for your phone/watch that wakes you up at the end of your sleep cycles. When you’re in deep sleep you tend to be pretty still, but when you’re at the end of a sleep cycle is when you typically move around a night. There’s apps that will wake you up when it’s almost your alarm time, but you’re moving around.
Also try to maintain a consistent sleep schedule. Eventually you can kinda figure out your own sleep cycles and try to work with them instead of against them.