Advice on not getting steamrolled by my male coworkers

I work on a great software development team, with 2 male developers, and 1 other female developer. With equally fantastic managers, product owner, and scrum master. However, since going remote this spring, the 2 male coworkers have started completely steamrolling me. I have really struggled to work on meaningful tasks. An example is in a meeting, one male coworker suggested to the other male coworker that if he needed more work, he should take over my assigned task. Without even acknowledging me. We're all at equal levels, and this project has been new to all of us. So there's no reason for these two to be allocating tasks for me. This has happened again and again. These two go to meetings without me, and do not share the information. When I do speak up and take on tasks, they will email people about my projects, without asking if I need help. There's a lot of other instances of them just forgetting me, or taking over my tasks. The men are not malicious, or taking credit for my work. They just have 0 boundaries, and want to be involved on every single detail. I have the support of my manager, and srum master, who step in when they can. How can I speak up for myself, and tell them to stay in their lane without sounding territorial or selfish? How can I speak up via video calls and take tasks, when they've already started and shared none of the information needed? I didn't have as much trouble when we were in the office!