so how often would it be expected to be checked got tightness
It depends really. Sometimes you can feel they’re loose (or not tight) before they trash the frame. Othertimes it happens on the ride and you just push on – I did just before Xmas, luckily as I’ve a Ti frame it just destroyed the BB.
The best thing to do is learn from each episode; buy the tools as and when and periodically clean/strip/grease.
Also depends on how much you ride and the conditions. And if you need an excuse to get out to your mancave, now you have one 🙂