Add Data for Full and Partial week

Hello:

Please refer to attached excel file.

Row 2 (cell M2) onwards shows day of the week.
I need to add hours for each employee for partial and full week.
Week starts from Monday and ends on Sunday.
Hence I have manually added partial week data in column M and N in Cell G3:G13 and full week data in Column O thru U in cell H3:H13

I need a formula to do this automatically.

Please let me know if any questions.

Thank you

Riz Momin