Dh wants to book a long haul trip in Oct, as thinks we should book it now, because he thinks holidays will be the first thing that people rush to book
That might be the case, but it's a hell of a risk with the money. A lot of the tour operators are dragging their feet over refunds because they're probably struggling with cashflow.
Does he really want to commit to thousands of pounds for a holiday that you've no idea whether or not will happen and then have to hope they'll give you your money back if it doesn't? You should get your holiday or your money back eventually but what if something like a job loss happens in the meantime and you need the money to buy food, pay bills etc?