You can, but there's a risk you'll overfeed. Also a risk you'll rush into buying something you'll regret. Take your time and choose something. You don't need the boutique "lineups." NPK is pretty much all the same. I use Grow More Sea Grow. It has some organic ingredients. Cost about $1 per plant, per grow. Many experienced growers use Jack's Classic. I'm
growing a plant right now in MiracleGro Tomato just to see how it works. (That's about 30 cents per plant, per grow.). Normally I would vary the NPK ratio with a little All Purpose in veg and Bloom Booster in flower. But, I want to see how it works by itself all the way through.
There's a lot of scammy stuff sold as cannabis fertilizer. You're paying for their arrangement of bottles (in which they hide the resulting NPK ratios). You get locked into something proprietary instead of plug-n-play.