Welcome and congrats on your new baby! Young cockatiels are pretty clumsy and in my experience they tend to need some time to learn ‘respect for the tail’
. Having clipped wings definitely adds to this clumsiness for sure though. Nibblers tail was an actual train wreck when he was a baby, always broken and super ratty. Hermes tail is a bit better since he’s fully flighted so he doesn’t land on his tail all the time like Nibbler did but it’s still a bit messy looking.
Zara is definitely right though and I would also recommend taking the little guy into an avian vet just to make sure he’s healthy and doing well! Also pictures please!!