Help..

My daughter is 2 year and 7 months old and sleeps far less at night than my 8 week old. She stopped sleeping through the night at exactly 2 years old. So much has changed. She now has a toddler bed so we could use the crib for her baby brother. We moved. Her whole routine was flipped upside down due to Covid-19 and daycare closure. I expected some regression but when does it end...? She is now completely potty trained which was a battle in its own. I just want to know when it stops being her just trying to adjust and becomes an issue.