Tip one over and look at the roots,, if the cup is the best part full move them up,, to establish a good root system they need room to spread,, or clubbing can occur,, A seed plant has a tap root and clones don’t,, a good healthy root system is formed when the plant/ roots need to search for moisture,, bigger roots,, bigger fruits,, Don’t Stifel it,, You can plant a seed in a hundred gal pot, it will search out the moisture , I don’t understand these little cups and pots, there for garden centres that sell seedlings,, I start ALL my plants/seeds in 2gal containers,, I Just don’t get the concept of up potting 2-3 times,, of what use is it???