Parashas Shemos
וַתִּפְתַּח֙ וַתִּרְאֵ֣הוּ אֶת־הַיֶּ֔לֶד וְהִנֵּה־נַ֖עַר בֹּכֶ֑ה וַתַּחְמֹ֣ל עָלָ֔יו וַתֹּ֕אמֶר מִיַּלְדֵ֥י הָֽעִבְרִ֖ים זֶֽה׃
When she opened it, she saw that it was a child, a boy crying. She took pity on it and said, “This must be a Hebrew child.”
Torah Temimah points to Sotah 12b (verified).
נער בוכה — קרי ליה ילד וקרי ליה נער, מלמד שעשתה לו אמו חופת נערים בתיבה.
English: “A youth crying” — it calls him a child and it calls him a youth; this teaches that his mother made for him a bridal canopy of youths in the ark.
Custom
The shift from yeled to na’ar is read as Yocheved’s anticipatory bridal canopy for her son.