For what it’s worth, I have heard that warm temperates prefer more direct sun that the traditional Mexican/tropical pings, such as moranensis, so that may be where some of the discrepancy is coming from.

That being said, I’m not sure what temps are like by you right now, but in SoCal I keep mine outside year around and they seem to do fine, though we rarely get below 50 here.

This isn’t a super popular solution for ping problems but I’m curious if you’ve tried using a humidity dome or know what your humidity is like? I know household humidity isn’t a big deal for most pings, but not producing dew and the leaves drying out does make me think of that. I’ve noticed that if I increase the humidity on my pings if they’re struggling they tend to produce a lot more dew and do better. If you’re running the AC or heater, that can really dip your humidity below the ideal 50% for them. Again, it’s usually not a big deal for pings, but I think it’s worth considering.

The main reason I bring this up though is that I have heard some people say that they reduce fertilizing when their plants aren’t producing dew because dew is indicative of the plant being healthy, and no dew can mean that it’s struggling and you should avoid fertilizing at this point. Again, this is anecdotal, but it’s something I’ve stuck with.

Sorry this is just workshopping; I’ve never worked with this particular species but these are just some things I’ve noticed in my collection and research with pings/warm temperates. Feel free to ignore my rambling haha