Well you can tell your other half he makes you feel unsexy, or would that be too blunt, remember blokes do not understand subtle hints.

You say he doesn't make an effort any more, may be he doesn't feel attractive anymore, it can happen to men after childbirth.

You don't say how old your OH is, it is just in at a certain age their testosterone drops off.

Why don't you suggest going on a date, this is what we did when our realtionship got a bit stale.
Get a sitter for your daughter, and make arrangements tell him its going to be like your first date so you both have to make an effort.
With out the crap of houses, shopping, children and bills, you can both think about each other and maybe rekindle your sex life.
If you do indeed love him, please try

Hope this helps
jamjams x