Juveniles are not unknown for being defensive and it is not unheard of for this behavior but it can also be a sign of stress whether from husbandry, security, or even not being used to being handled. I think the term defensive might be more appropriate than aggressive in this case.

I know you have had some advice recently on this forum. Did you adjust your temperatures and how has his feeding schedule come along? Last I can check you have the hot side over 92 and cold side at 85 which seems a little hot to me but nothing that really would up defensiveness. If you are not noticing increased movement in the enclosure I would rule that out. If however you have noticed your snake out and about during the day or climbing everywhere at night you might want to make sure there is nothing making them stressed.

Also make sure you are feeding properly and adequate amounts.

The fact of the matter is you might just have a defensive stressed juvenile that needs more time to settle down and get used to handling. How often and for how long each time do you handle your snake? When starting out 5-10 minutes is a good amount of time to get them used but you also need to handle them properly to get them used to being handled. They don't need to crawl around or even explore anything. Cupping a juvenile is enough to get them used to being handled. It just takes time.