Should I RE-Fi if I just closed on a house in March 2020?

So I talked to a friend that is a lender. I know that now would be a great time to Re-Fi because the rates are super low and the market is high. I closed on a house hack using a conventional loan in March 2020 with a rate of 3.625%. I could potential lower the rate to around 2.75%. This would decrease my mortgage payment and increase my return from tenants. 

What are the pros/cons of re-fi right after you purchased your first home? 

Thanks,

Ashton