Hi everyone, just thought I'd add an update to this as we've had some success and I thought someone else might find the information useful.

Overnight I've been alternating my BBH and my two Mandy Mac hemp fitteds with Mother-Ease covers... was getting some leakage with them but have since bought a bigger cover (large instead of med) and it's GREAT fit, so that's what the problem was.

I got some microfleece liners and they're fantastic, really make a difference to how damp it gets next to his skin.

It wasn't just overnight that I found he was leaking, but also in the mornings. I've since realised (by keeping my eyes open - sometimes stuff is so obvious, isn't it?!) that he wees most in the am when he gets up. So when he gets up and has his morning bottle, I wait a bit (for the inevitable poo LOL) and afterwards I change him into a Haute in which I put two bamboo inserts (I leave out the microfibre completely). They seem to fit best around his legs and tum, and then I change him again before he has his nap, which is about 2 hours after he first gets up.

Generally then there's no problem for the rest of the day, as long as he's changed every couple of hours. I just needed to pay more attention to when he needed more absorbancy - and the bamboo is just a lifesaver! So thanks again for everyone's help and I hope my results might be able to help someone else as well!