There are many test series but few are effective,some test series which I felt good are ;
1.Allen(same as neet level, only few will be of higher level which you can find in their modules)
2.Aakash(Most questions are from ncert but will be very tricky & conceptual)
3.some websites & apps like topper.com,etoos,ladisha(they pay you for each answer),byjus,…but don’t waste much time on them if you are not comfortable.
4.some YouTube channels also provide
A) city of biology (by Dr.Raj singh, his test series is 100% based on ncert)
B) biomentors (they tell you to subscribe by paying some amount & provide you everything required like a tutorial from coaching till notes ,motivation, guidance,mock tests..)
Hope it helps you;