That’s all you can do, we’ve all been there.
I bought too small and led to start , then a CMH 315w ballasts and reflector and jammed it in a 3’x3’x6 cause it was locally made and available, then I moved to a quality LED before I settled in. Would have saved some money and heartache had I done better research and had more patience.
The number one thing you need in this hobby is patience, lol. Just keep at it