Keeping Macbook Pro plugged to Charger during day time

Hello all,

I know there are similar questions related to this topic with answers but I want to give more details to my case. I work and study at home on my MacBook Pro 2019. I always want to connect it with two external monitors using a very small Docking Station and my computer needs to be connected to the charger so that it stays on when closing the lid and also in order not to consume the battery very quickly.

Is it okay to always keep my MacBook Pro connected to the charger from morning till bed time and then disconnect it?

I have noticed also that the battery currently doesn't last for a long time even when I don't have many programmes running in the background. What could be the reason?

I am using macOS Sonoma.

Thanks in advance!