To prove that they employed the " least restrictive means" of burdening the plaintiffs' religious exercise in each instance, the defendants must show that they " lack[ ] other means of achieving [their] desired goal without [placing] a substantial burden" on the religious exercise. Cruz v. Collins, 46 N.E.3d 114, 89 Mass.App.Ct. 1108 (2016) (Rule 1:28). " A prison cannot meet its burden to prove least restrictive means unless it demonstrates that it has actually considered and rejected the efficacy of less restrictive measures before adopting the challenged practice."