Don’t think so. Ndombele was 100% Mousa Dembeles replacement and one we had wanted for over a year.
Lo Celso was signed as an 8/10 hybrid, another position we had been looking to strengthen for a number of years. (Think Grealish)
Eriksen wasn’t replaced because of a combination of not being able to sell him and making a mess of trying to get the players we wanted to replace him.
All of the above is just my opinion based on looking from the outside. We could of course both be wrong.
I am not sure we could easily shoe horn all of Lo Celso, Ndombele and Fernandes into one team - which is why IMO we were only ever in for two of them. And I cant see us spending the amounts required (which would meant the three being the highest transfer fees ever paid by Spurs) to having one of them sat on a bench - we'd have spent more money on a different position..
In hindsight it looks like a mistake to have bought Ndomebele (although he might still come good) but he was undoubtedly bought to provide creativity from the CM position as there was no like for like relacement of Dembele. So obviously now it looks like Ferdinand would have been the better option to buy - that's just a footballing judgement mistake : it happens.
Lo Celso played more of a 10 role at Betis, but with Ndombele not playing has played further back than expected, still providing creativity but too far back to get the assists and goals which he was getting at Betis.
And in January we brought in Bergwijn, probably again to add an extra creative option, but from a different position - in the Dutch league he got about 5 goals and 10 assists in the first half of 19/20 and 14 goals and 12 assists in 18/19 - so Bergwijn is providing both creativity and goals from the wider positions
Lastly, Eriksen played as a no 10 and much of our play went through him. Fewer no 10's are played these days, with more sides preferring play to go through several players rather than just a single no 10 - and I dont think that point would have beeen lost on Spurs, and hence their decision not to go for a 'like for like' player.
All of which suggests that whilst I may not be 100% correct, I'd suggest you are wrong to think we would have planned to buy all 3 of Fernandes, Lo Celso and N'dombele.