If it is down the right main bronchus (which it usually is)…
Cut off the distal connection of suction tubing and pass down the ETT/tracheostomy (size 8+)
Also a possibility is to connect to oral ETT and advance into right main bronchus
This gives wide bore suction.
When preparing sux for paeds case have syringe attached to a needle for emergency sublingual/IM injection if needed.