Are you working from home or SAHM?
Try awake early, go for a light walk like 15-20mins ( if u have no more more morning sickness etc ) , read books, try occupy yourself in the day. Also Try not to overthink a lot.
2nd trim onwards can do some light stretching at home or if u keen, can sign up for prenatal yoga class /via online? Or have a cup of Warm milk & find some relaxing music before sleep.