My two year old has been a champion sleeper basically her entire life, so I'm incredibly spoilt and kind of not sure how to handle this regression. For reference, she is not yet potty trained but we are starting soft and "going potty" is part of the bedtime ritual even though she wears a diaper to sleep. She has all of her molars and beside the occasional runny nose, in good health. We transitioned from a crib to a twin bed (mattress and box spring on the floor) a couple of months ago with no problems - even though she can get in and out of bed on her own, she never does at night. She naps at DC 1-2 hours, but at home on weekends, naps are usually 2-3 hours.
Bedtime every night is 7:30, we have a tight ritual and yeah, she's started the bedtime fights that are standard (refusing to brush her teeth, not wanting to put on pjs, asking for one more story, etc) and will sometimes cry after we leave the room and close the door, but generally self-soothes and goes to sleep pretty quickly - she is just about never still awake after 8pm. We do let her have books in bed with her she can "read" to her bear (her lovey) which has helped bedtime a lot. Until the past couple of weeks, she's slept through the night waking between 7 and 7:30 in the morning.
The past couple of weeks she has started waking up in the middle of the night once or twice - last night she woke up three times. She doesn't cry, she just calls "Mommy! Daddy!" over and over again, sometimes adding in a "Come here!" We wait a few minutes, usually going to the bathroom prior to going in to see what's going on, then one of us will go into her room where she will want to be tucked back in or ask to have her diaper changed (she'll ask for a new diaper regardless of the state of the diaper, last night she asked me to change a dry diaper). She has also asked for one of us to lie down with her a couple of times.
I'm 6 months pregnant and it takes me forever to fall back asleep even when DH is the one who goes to see what's up, and if this keeps up, I will go crazy.
I have some theories as to why this is going on - DH has been incredibly busy with work and has been out of town a lot this month for business trips. He is self-employed and him being busy is a good thing and not really optional right now. She also just transitioned into the 2-3 yr old room at DC from the baby/toddler room which might be a factor.
We have told her that it is night time and that she doesn't need to sleep but she does need to be quiet and stay in her room when she wakes up. We have tried waiting longer and longer to go in to check on her (the longest we held out to far has been ~30 minutes when we finally caved). She's not crying, so it's not really a question of self-soothing and it feels weird to let her keep calling for us and to not answer those calls. When we go in to see her, she's never upset even so I don't think it's bad dreams. I just don't know what to do - I get that we have set a pattern but my only idea is to tell her at bedtime that we will not be coming in to see her gain until morning and then sticking to that... I'm just not sure that it will work and it just seems... cold.
Any ideas or advice?