Im 32wks today so not as far as you, but I have learned my body knows when im tired and when im not, I feel lazy sleeping during the day but then I remind myself I still keep the house clean and get my orders made, I just do it on a differemt schedule now. I think its normal, my doctor told me if I felt the need to sleep then I probably did need the rest.
I do and I'm 37 weeks. It's normal