[Grammar] SINCE and Present Simple

[naweewra]

Hello,

Can I use the Present Simple tense in the following sentence?

Since my promotion, I'm a lot busier. I arrive earlier and leave later.

Thank you.

Nawee

 

[Grumpy]

Yes.

 

[SlickVic9000]

(Not a Teacher)

You're sentences are okay, but I would use the present perfect continuous in the first sentence:
"Since my promotion, I've been a lot busier."