Site falls over every few hours before rebooting

It might be the easier option—at least it will narrow down what the issue is. If it’s LiteFS related, we could try continuous profiling via profefe (although I haven’t personally used it before). Or, since it happens fairly regularly, you could sample the heap profile from your home computer/laptop every 30 seconds:

while true
do
curl -s http://$HOSTNAME:20202/debug/pprof/heap > heap.`date -Iseconds`
sleep 30
end

Are you still seeing memory spikes?