So a little background on our living situation. My husband (31m) and I (31f) live under the same roof with my mom (59f) and brother (27m). When my dad passed away back in 2020 and my mom stopped working back in 2008 due to medical reasons (was never on disability either because my dad was able to support her) so in order for her to not lose the house my husband and I agreed to live there to help pay for the mortgage (since the house will eventually go to my brother and I) well 5 years later we expanded by adding another bathroom and room because we now have two daughters (2 year old and 6 month old). Since we both work my mom is our babysitter but now she has to take care of her mom because she has Alzheimer’s and lives in another country and my mom wants to do more to take care of her. Since it’s happening so suddenly I was going to see if my mil wanted to come stay with us for a month to help me with my daughters. She agreed but her health isn’t the best either so she wanted to bring her son (40m) and granddaughter (3f) to stay as well. I said I didn’t have a problem but would ask everyone if it was okay. My mom was hesitant but agreed that if my brother was okay with it she wouldn’t mind but when I asked my brother he said no because he wasn’t going to be comfortable about it. I should also mention we don’t really have a spare bedroom either so they would be sleeping in the living room. Well my husband wasn’t to happy about that and he thinks his reasons for not allowing his family to stay is unreasonable (he doesn’t mind mil staying it’s the other in laws he’s not comfortable with). He is saying I should have his back more and continue to talk to him to get him to change his mind. He also mentioned that they may have bought tickets to come already but I know there will be a big issue if that happens and I’m trying to tell him to talk to my brother first before getting them to come. But am I under reacting to my brother? AITAH for not fighting for my husbands family more? My mom is willing to not accept rent to put them in a hotel or something but that’s not good enough for him either and I just don’t know what to do. He says I don’t care about his feelings and family and that my brother is being illogical but idk I just want to know am I in the wrong and maybe some advice on what you all would do in my shoes? Thank you!