Question about DLC levels

so I recently came back to the game and i started a new playthrough and around lvl 20 I downloaded the DLC’s but I carried on with the campaign for a while but I decided to jump into the new DLC, im currently lvl 28 but the DLC is at the lvl I was at when I downloaded it(20) same with handsome jack DLC too. is this normal ? I thought it would scale to my current lvl ?

I don’t believe it scales until you finish the main quest line. I did the same thing and I was overleveled for the main quest when i got back into it.