T1 and T2 are close by, but T3 is far away. The train goes from T3 to T2 (one direction, and then to the city). 90 min is way too tight for the transfer. If OP needs to check-in at T3 for T3E departure, he/she must complete check in at least 60 min prior to departure. I don't know how long T2-T3 I-to-I MCT is, but I believe even T3-T3 I-to-I MCT is 120 minutes. So T2-T3 is possibly much longer.

I would avoid this transit.