As it mentioned before, there came a point in its time with its owner where the quota system had progressed to it essentially being gagged and hooded all the time at home, and starting to feel uncomfortable when it wasn't. Around this time its owner stopped including hoods and gags in the quota system, and started requiring it to have its face covered and its mouth either sealed shut or held open while at home. (It thinks it mentioned this earlier but its owner felt it didn't need to be able to breathe from both its mouth and nose at the same time, so if its mouth was sealed its nostrils were open, and if it were in an open-mouth gag its nostrils were plugged and/or taped over.)
Before it lived with its owner, it would sometimes be sent to bed hooded - but it would find in the morning that it had removed the hood in its sleep without remembering. When it started to live with its owner, there would usually be a similar result - or its owner would remove the hood himself because its tossing and turning would wake him up. If its collar was locked on to keep the hood secure, it found itself waking up so often during the night that it would be exhausted the next day, so keeping it hooded overnight was not deemed practical. However, after he instituted the requirement of it being faceless at home, its owner decided to train it to be able to sleep hooded. He purchased a hood with a locking zipper that had nose holes and perforations over the mouth area (as a safety measure to allow airflow if the nostrils became misaligned in the night). This way, even if it could manage to get the hood out from underneath its collar, it wouldn't be able to get it off. As he preferred "contingency security" he also started having it sleep with its hands locked in cuffs. At some point he also started chaining its collar to the radiator that was near the bed, to reduce its mobility so it was less likely to disturb his sleep.
The first few nights were very difficult - when it referred to the hardest thing it ever had to get used to, it was this. It had trouble staying asleep, even though when it was awake it was completely blind in the hood. It sometimes couldn't tell if it was asleep or awake. The next day it was very sleep deprived, which made it a bit difficult to get through its work day. Its owner decided that it would just have to push through, so he didn't relent. It thinks it took almost two weeks of this before it finally was able to really sleep the whole night. It felt so good to have overcome this. It also felt good to wake up and not be able to release itself. On weekdays, its owner would let it out so it could get ready for work (his work day started later than its did) at a predictable time. On weekends though, it had no expectation of being released at any particular time. Sometimes, he would merely unlock and unzip the hood enough to access its mouth, give it a drink of water, and then gag it and re-lock the hood, leaving it blind for as long as he liked.
Once it was trained to sleep hooded, he had the flexibility to try other options. He generally did not put it to bed with an in-mouth gag for safety, but sometimes he would put it to bed with its mouth taped, or locked in its condom-mouth hood. He would also occasionally layer a darlex hood with just nose holes (it has a couple of these, which he called "covers") over a latex hood, or canvas bag he had made for it that had airholes around the mouth and nose area. Waking up restrained and helpless like this is something it really misses. It is hard to describe the feeling of coming into consciousness every morning with the realization that its sight, speech, hearing, and movement are completely at the whim of its owner.