Mentally Handicapped Parent and Babysitting

So this may be tough to explain, and I hope the words come out right and not offensive.

We are expecting our first child in January. We are essentially only children (I’m my parents only living child). My in-laws live far away and quite frankly don’t seem to care they are going to be grandparents.

I lost my sister in July, and we are all grieving. This baby will be a blessing and a happy time for my parents, and they are excited.

That being said, my parents will babysit one day a week when I go back to work, 3 days in daycare and I hope to work from home one day a week and my dad can come over then.

So the problem..my dad was in a bad accident (bike vs car) that left him with a TBI. He does have his license back but does some quirky things. Now with grieving I’ve noticed him taking a couple steps backwards in his recovery.

I love my dad dearly but I do not think he’s capable of caring for a baby. My mom is in denial and seems to think he can. Mentally he will not be able to remember to change a diaper, warm a bottle, out a car seat properly in a car, remember the baby sleeps on their back etc.

Thoughts on how to approach this delicately without offending him and getting my mom to understand that if she’s watching the baby, she is 💯 in charge for safety reasons.