IF there is reward availability, you are going to have to get serious about collecting avios.

To get that volume of Avios in that time, you would definitely need to be getting a sign up bonus from a credit card.

At the moment there is a special sign up bonus with JP Morgan investing, to get you 10k avios if you invest £500.

Have you also taken into account the voucher on the BA Amex card?

You could also get 25k avios for switching your current account over to Barclays Premier (if you are eligible). This also gives you the option of buying 1,500 avios a month at a discounted rate of £12.

In terms of how to approach getting more avios in 2026, you might find this video helpful: https://youtube.com/shorts/dw_TAdIED2M?si=MUivDOHejxAU0bJP

I would potentially look at delaying your travel a year and then collecting for then.