You have backtracked enormously, compare your OP with subsequent posts.
Your op read as an ongoing arrangement.
You are being lazy and irresponsible wrt your role as a parent.
You work, you sustain your home, your child, your childcare responsibility.
When you have established a serious relationship with a future, then go for it, but if this doesn't work out, the arrangement in your OP smacks of shunting your DD off to the boyfriend, cos you cba to source professional child care like the rest of us have to.
In a year or so, you can revisit, but you're giving a man you don't know romantically well full and clear access to the most precious person in your life, and while i'm not saying he's bad or good or dangerous or safe, he's a NEW Boyf, and you need to establish that relationship in isolation to that with your daughter.
Don't fall into easy and comfortable arrangements, they can kill off a relationship and compromise your independence/reasoning when it comes to what's best for you and your family.
You end up relying on this guy, and if he doesn't make the grade, you are in massive danger of allowing it to go on when it could be harming you and your little girl.
Back it all off a bit, do things properly.