Issues with Inserting protein in lipid bilayer

GROMACS version: 2021.4
GROMACS modification: Yes/No
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I am trying to insert my protein in a lipid bilayer. I cannot use charmm-gui cause it doesn’t support the forcefield I am working with, gromos53a6 and I am not sure about how to convert the parameters from one force field to another. I used gmx insert-molecules but I am unable to get any results. I read a different thread about why this maybe caused by not enough space being there inside the membrane, but if that’s the case, how do I fix the issue?
Unable to use this tool, I tried using gmx solvate but if i simply use the bilayer.gro file, my system is a mess with the number of lipids increasing (attached image). U
Can anyone please help me out with this?

Thank you for your time and help!