My bunnies about 2yrs old and is free running.he pretty much does the same thing as yours.just lounges around, moving to different napping areas.he gets these spirts of energy and investigates everything, hopping on everything he can get up on,we play the chase games a little, then he naps.so most of the days he’s just kicking back.then 8-9pm he goes into hyper mode and runs and binkys and jumps on everything all night long.i think your rabbits are just so comfortable with you and their seroundings that they feel safe enough to close their eyes and rest more, and adding the age thing, they will sleep a little more.my guess is that you’ve also gotten comfortable having then around, and maybe backed off some of the attention you use to give them…not a bad thing,but if you want them to be a little more lively,i think it goes both ways, bring on the attention, play with them and talk to them more, and make them interested in what your doing.i basically narrate everything IM doing, making my Bunny part of everything I’m doing, so he is always following me around watching what I’m doing cuz he feels like he’s part of it.