2 year old in bassinet

Hi
We really appreciated all the previous advice in here about New vs Old Club suites with respect to kids. In the end it was taken out of our hands as for Easter 2024, BA now seem to be running both the Miami services as A380 so therefore presumably old Club.
We’re not debating whether to bother booking a bassinet seat or not. Our third will be about 21months old when we fly, half the outbound flight will (hopefully!) be asleep, and fingers cross all of the inbound.
At that age, the 75th centile on weight is the 12.5kg limit of the bassinet seat so fairly good chance he’d qualify when we flew. The debate we’re having is how practical it really is when they’re getting on for 2. Felt high up on bulkhead with our first when he was one, and we just can’t remember how likely a 2year old would be to be strapped down up there and comply!
You might say what have you lost by trying and just booking a bassinet seat anyway. But if there is a fair chance its impractical we’d much rather book elsewhere where we can have windows not over the wing and rear row seats where the second window has direct aisle access without clambering over stranger legs (as would be better for the kids to take that).
Also, any tips on how else it works with infants. Sleeping them between your legs, on the floor in front of the seat in upright position etc etc.
Thank you!