yes but you must let the joint return be fully processed.
while it's possible you entered something incorrectly in the MFS return having a larger tax bill when using this filing status is common. certain credits are lost and certain retirement contributions are restricted. you would also expect to see a large increase if your spouse had very little income and the standard deduction was used
examples
filing joint
H - 50K income s-10K income total 60K
std deduction say $28k (rounded)
taxable 32K
tax 3400
filing MFS
H - 50K
std deduction $14K
taxable $36K
tax 4100
you would need to compare line by line the joint and your mfs returns to see what's happening.
