Nice try but no.
Solo's are coming that isn't even questionable. What is questionable is if there a way to save the throuple ep11 puts it at its lowest and clearly establishes solos for Josy and Maya. EP12 in throuple is either having mc go home with Josy no mater what or it comes down to choice and your either going with Josy or Maya. If you go home with Josy no matter what there is a path for saving throuple if some things break the right way like being able to say I love to Josy if you already said it to Maya and getting the lewd scene but if that doesn't happen likely means it over for throuple. While it possible MC going to Josy's regardless I don't think that is how it will play out. EP10 you go to Maya's for thanksgiving but that was about the loan not there relationship and that happens on all paths besides throuple plus while ep10 spoiled the solo scenes at the time of writitng this that hasn't happen yet in ep12 and should be noted during ep11 only gave a preview of the Josy date and the only previews of Maya was from 3some Maya had 0 on her own. So that leads me to lean to MC either going to Josy's or Maya's for Chirstmas which in my mind is the worse case possible for throuple because it leaves pretty much no room for a save it path, in my mind anyway.
The MC will be spending Christmas with his father, and the only question is whether Maya will be going with him or not. Josy is definitely spending Christmas with her mother, and without the MC. In the preview with Iris, the MC is sitting next to her wearing an old T-shirt. You don't celebrate Christmas with your girlfriend's mother in clothes like that, especially since the MC already showed up to Isabella's Christmas dinner dressed up.
Therefore, the MC will either have taken Josy to her mother's or will pick her up from Iris's house. The preview of Josy in sexy lingerie could be either at her mother's or at her father's house, because Josy will be celebrating Christmas with her father later. Furthermore, I don't think this preview will necessarily lead to sex with Josy. Why? Josy is wearing way too much makeup. I think it could be a photo shoot.
The Thanksgiving dinner at the Baileys' also touches on the relationship between Maya and the MC. The player has the option to mention to Patrick that he's Maya's boyfriend, or not. Maya also tells her mother that the MC is her boyfriend, and the MC confirms this. Furthermore, both Maya and the MC display spontaneous intimacy, which even Patrick notices.
I'm not ruling out the possibility of solos; I've simply added another possibility. What you're calling the low point is just a conversation. Maya and Josy aren't arguing, and at the end of the conversation, Josy seems a bit more confident. This is undeniable because it's written into the dialogue.
Yes, Josy and Maya didn't communicate well. However, the reason for this should also be identified. If you want to find it, I'll give you a hint so that the reason is included in Episode 10. Maya doesn't say something to Josy, and Josy doesn't say something to Maya. Both of these things are related to the MC.