You can recover that missing characters but 5 missing characters take more than a year or maybe decades.
I did quick calculation and it's far longer than your guess.
Total combination = 2048 (total words on BIP 39) ^ 7 (total missing character) = 151115727451828646838272 (about 1.51E23)
Speed of Nvidia 1660 Ti[1] = 134 kp/s or 134000 combination per second.
Estimated time = 1.51E23 / 134000 / 86400 (total seconds in a day) = 13042426755113.32 days (about 3.57E8 century).
It's definitely impossible, so OP have to either find more words on his seed or look for other way (e.g. recover deleted wallet file).
[1]
https://btcrecover.readthedocs.io/en/latest/GPU_Acceleration/