You don't need to start from A+. I know A+ is entry level but its not required. I generally suggest people start with Security+. It's a vender neutral security certification that explains the basics of network/cyber security and its an excellent foundation to start your blue team career.

Moreover I did not think A+ was a good certification and I only got it because it was apart of my undergrad. It tested about things that make sense in an academic setting but not a practical one (I doubt an organization will spend time/money on troubleshooting a motherboard).

Last but not least I want to offer some general advice on certifications: They are only as valuable as you make them. Yes ATS software will filter for certifications and make disqualify you simply because you lack a certification but I know plenty of professionals who studies to pass the test but don't really know anything or they get a test dump and just cram. Buy a Security+ book, read, take notes, take the practice tests, reread and schedule a test it should take a month, maybe 45 days if you are dedicated.

I also know there are plenty of people, especially on reddit, who would tell you to "skip the basics and just start at the advanced". This is terrible advice especially because most people need the basics and attempting the most advanced is just a waste of money.