I would careful!
If you plan to shade Jill more, don't crowd her! That will make things worse!
You guys still have plenty season left, I'd just up the water and fert, maybe heap some soil around that exposed bulb, not alot but some, and see how she fares...
I would strongly consider moving her to MORE sun!
It's highly unlikely she's getting too much sun, it's just that she's used to shade, that few hours of direct sun is intense, and without being used to direct sun, it burns her!
Mine roast in full sun all day long! And they are in pots! Not only that but they didn't even get repotted or fresh soil this year!
Our sun here is intense enough that my tropicals pout any enjoy day that's over 80, yet the ones I saw in Florida looked just fine! They get all that humidity I guess...
