2 options ... if these are all cash donations:
1) in the TT program you can make ONE entry for the annual total since that is all that will show up on the tax return ... entering them in individually is for YOUR benefit only ... if the IRS questions it later you will need to provide your receipts at that time.
2) use the It's Deductible tool to enter things as the year unfolds then import the information to the TT program when you complete the return. https://turbotax.intuit.com/personal-taxes/itsdeductible/