The current schedule of shows will be wrapping up over the next couple weeks, I think the only one I’m currently watching that will carryover to April is So I’m a Spider, so What? A number of series are taking 3 months off before continuing in July including Reincarnated as a Slime, Mushoku Tensei & Attack on Titan I think.
As far as new seasons that start in April for existing series I’ll be watching MHA (3/27), Fruits Basket, Zombieland Saga, Moriarty the Patriot & Welcome to Demon School, Iruma-kun for sure. Maybe Megalobox Nomad & SSS.Dynazenon