Let's quickly review some levels in SPY.
I can see potential support at 525 as a base flip level.
523 also looks like support - here are 21 EMA + the flag bottom + gap fill.
The obvious resistance here is 532-533.
One key thing I want to mention: the market is now ranging, and it's important to be patient and give it some time to form clearer price action and confirm the next momentum.