Maternity leave/FMLA pay question?

Ca
So my husband and I looked and found out that we could afford for me to be a stay at home mom to our baby boy die in June. I'm getting 6 weeks maternity leave with FMLA and he doesn't want me to tell them I'm not coming back until 2 weeks before I'm supposed to return to work. He is scared that they won't pay me my FMLA/maternity leave pay if I tell them I'm not coming back before I have our son. Does anyone have any experience with this? We just want to make sure I get the money I've been paying out for short term disability and FMLA. Thanks!