This is going to contain a small rant as well, so TL;DR Is 1.5 hours, 2 hours tops too long of quiet time for a 3.5 yo if she's content to be in there and I can see/hear her? If it is, what would be more age appropriate?

My husband (33m) and I (32f) have one child (3.5f). I've been a full time parent her entire life. When she was maybe a year and a half he went to night shift and only got back to day shift a few months ago. But basically I spent about 2 years doing it all. He wasn't uninvolved but his involvement was limited. Anyway, since he's been around more he sees my parenting and I've occasionally feel judged for things that felt prefectly normal and okay. Most recently, quiet time.

I started doing quiet time because we'd stopped naps and I was really missing the energizing break. I usually keep it to about 1.5 hours, which gives me time to play a game or watch a show and eat lunch if I haven't yet. If she needs help I'll respond, but she's needed it much less than when we started. Occasionally it'll be 2 hours but not often.

Today we did quiet time, which isn't something my husband sees much of because we usually skip out on the weekends because we get caught up in whatever my husband wants to do. Whatever. I'm trying to not skip it so I went ahead. I forgot to make exact note of when we started but I knew the general time. Towards the end my husband asked how long she'd been in there. I said probably nearly 2 hours but I was almost done with what I was doing and I was going to go get her when it finished in about 10 minutes. When there were literally seconds left he said he was going to go in there with her because he doesn't like her being in there by herself for so long.

Is it excessive? Keep in mind that she's safe and under observation during that time. She was also happily playing. If it's too much, how long would be more age appropriate?