My OH has 8yo twins from a previous relationship. We now have a baby and I’ll return to work 2 days a week when she’s 8 months. I will work 1 weekend a month and this falls on the weekends OH has the twins (he has them every other weekend) - he’s unhappy that he will work all week then look after 2 children and a baby on his own for the weekend. He does a lot of travelling during the week and his job can be intense. He spilt up with his ex when the twins were 18months and had them on his own at a “difficult age” they have of course become easier with age but he now has a really negative mindset of looking after children on his own (I actually feel like they will be helpful with the baby) they are amazing with her now at 4 months and as they got older they will become even more helpful. He wants me to look for another job saying there will be loads of opportunities out there where I won’t have to work a weekend but I don’t want to spend the rest of my maternity job hunting. Is it unreasonable for him to look after all 3 once a month?