F1 to H1B Tax Return

Hello, 

I entered the US in August 2014 on a F1 visa. I got a full time job after graduation and was on OPT starting Feb 2017. My H1B got approved in 2018 and I've been on H1B since Oct 2018. Up until now, I've been filing using 1040NR-EZ and 8843. How do I file taxes for this year? Please advise

Thanks!