We tried 2.5h this AM and she woke after 30min

I only spend up to 45min trying to extend. Due to fatigue we put her down after 2h for next nap and we got a 90 min nap. Then just over 2h for her next AT and she only slept 30min.
I find it extra challenging when her first nap is poor as I feel we spend the rest of the day trying to avoid OT.
Then she goes down to bed earlier than I would like b/c she is exhausted, which leads to early morning wake up.
A difficult cycle to break.
She was very miserable when we did the 2.5h AT I think we will scale back to 2.25 tomorrow and see what happens.
Wish me luck!