WIBTAH, if I vaccinate the my child behind my husbands back?

My husband (32M) and I (32f) had a first baby (6m) prior to the birth of our baby I had always been vocal about vaccinating and trusting the advice of doctors, medical professionals, and scientists. My husband on the other hand is a skeptic however he seemed onboard with vaccinating. So when our baby was born he received the recommended vaccination at birth, 2 months, and 4 months. Now at 6 months my husband has gone down a spiral on how he doesn’t want our child to continue any other vaccinations. This despite the recent outbreaks of measles that have been recently reported. It’s important to note that my husband has an autistic sibling, who was nonverbal for years and struggled a lot as a child. My MIL has made comments on vaccinations which have led my husband down a rabbit hole of “research” and now is uncomfortable vaccinating. Keeping an open mind and trying to be understanding of his concerns I’ve heard him out and even read some of the articles he’s found. Much of which isn’t supported by independent research and more so testimonials of parents who had a bad experience with vaccines. He argues that pharma and CDC go out of their way to remove any information and discredit doctors who speak against vaccines. That the fact that you can’t sue vaccine manufacturers for vaccine related injuries should be enough to convince me against them. I rebut his arguments by stating that misinformation is dangerous and that vaccines are one of the most studied and regulated medical tools in existence. They are backed by decades of global research, real-world data, and the consensus of every major medical organization — including the CDC, WHO, AAP, and countless pediatricians who vaccinate their own children. But this is still not enough for him and he is convinced that the best thing is not to vaccinate. I’ve spoke with our child pediatrician who has offered to have 1:1 with him and was very understanding of his concerns but he was not satisfied with the information she provided and said it was all just a regurgitation of what doctors are told to say. We’ve been at this back and forth for weeks and I’m reaching the point where I am seriously considering vaccinated our child without him knowing. He’s a very involved parent and I don’t want to make any important decisions without him especially not medical decisions but I feel like I’m not getting anywhere with him. He’s already said that if we have a second child that we will not be doing any vaccinations. To which I’ve responded that if that’s the case I guess our baby is going to be an only child. WIBTAH, if I choose to vaccinate despite his feelings?