Yes you can like the ladies said.
However there are dozens of hair options for transitioners...Protective styling can help....
You may invest in going to a natural hair salon or any salon that can do cute natural updo's you can wear a week or 2 at a time or learn to do them yourself. Flat-ironing to keep that relaxed look is not the only option to look good while transitioning....
Many ladies do braids, but you have to give your scalp a rest for a few weeks in between braid installs...Same thing for weaves....
I have seen many transitioners here do 80-90% protective styling with beautiful results...plus not to mention all the natural styles you can find on this site alone.....That way you can limit how much heat you use to less than 3 times/month if possible...It takes a lot of creativity, experimenting, probably some cute hair accessories, and practice! Trust me...I've been there....