Super small plant. Should i continue?

Looks like they may be over watered, or have poor drainage, or both. Try scooping the whole root ball out and leaving it in the air for a day, then replace the potting soil with new. Also if you're using soil that contains nutrients, don't add any more when you water for a while. New growth will start growing out but it takes a bit. Look into capillary mats. They do a GREAT job with new starts, and are much easier on busy folks with watering issues, like myself. I use them for everything indoors now, because I had problems that looked just like that. My only problem with capillary mats is they work TOO well, and the plants grow too fast to keep up...lol.