notadictionary.com
我营养还跟得上
→ “I'm still keeping up with nutrition.”
我 wǒ³ = I/me — the speaker's self-referential pronoun.
营养 yíng² yǎng³ = nutrition — what your body needs to stay healthy and strong.
营 yíng² = to manage/maintain — like running a business for your health.
养 yǎng³ = to nourish/raise — feeding your body good stuff.
还 hái² = still/yet — shows that something continues or hasn't stopped.
跟得上 gēn¹ de shàng⁴ = to keep up with — staying on par or not falling behind.
跟 gēn¹ = with/accompany — like walking alongside something (here, nutrition).
得 de = a particle showing ability — like 'can' or 'able to'.
上 shàng⁴ = up/to reach — completing the action of reaching or keeping up.